60 (
sixty) ( ) is the
natural number following
59 and preceding
61.
Being three times twenty, 60 is called "three
score" in some older literature.
In mathematics
Sixty is a
composite
number with divisors
1,
2,
3,
4,
5,
6,
10,
12,
15,
20,
30, 60 making it
also a
highly composite
number. Because 60 is the sum of its unitary divisors
(excluding itself), it is a
unitary perfect number. Being ten
times a perfect number, 60 is a
semiperfect number.
60 is the smallest number divisible by the numbers 1 to 6. (There
is no smaller number divisible by the numbers 1 to 5). 60 is the
smallest number with exactly 12 divisors.
This number is the sum of a pair of
twin
primes (29 + 31), as well as the sum of four consecutive
prime (11 + 13 + 17 + 19). It is
adjacent to two prime numbers (59,61).
The smallest
non-abelian simple group has order 60.
In
geometry, 60 is the number of
second in a
minute, and
the number of minutes in a
degree. In
normal space, the 3 interior angles of an
equilateral triangle each measure 60
degree, adding up to 180
degrees.
A number system with base-sixty is called the
sexagesimal (original meaning of
sexagesimal is sixtieth).
In science
The first
fullerene to be discovered was
buckminsterfullerene
C
_{60} - an
allotrope of
carbon with 60
atoms in each
molecule. This ball is known as a Buckland ball,
and looks like a
soccer ball.
Cultural number systems
The
Babylonian number
system had a
base of sixty.
The number
system in the Mali Empire was also based
on sixty (this is reflected in the counting system of the Maasina Fulfulde, a variant of the Fula language spoken in contemporary Mali). The
sexagenary cycle plays a role in
Chinese calendar and
numerology.ã€€Because 60 is divisible by the sum of its digits in
base 10, it is a
Harshad number. In
and in equals 60 = 5
dozen = 1/2
small gross. This quantity was used in
international medieval treaties e.g.
for ransom of captured
Teutonic
Knights.
In religion
- Judaism
- In the laws of kashrut, the proportion (60:1) of kosher to
non-kosher ingredients which can render an admixture kosher
post-facto. (Talmud, Tractate Chullin 98b ; Shulchan Aruch, Yoreh
Deah 98)
- In the Bedtime Shema, the number
of strong men (giborim) said to surround King Solomon's bed.
In other fields
There are 60 seconds in a minute, and
60 minutes in an hour
Sixty is:
- In time, the number of seconds in a minute, and the
number of minutes in an hour.
- The number of feet in the standard measurement tool to evaluate
an automotive launch on a dragstrip. It's
the time that it took to travel the first of the track.
- The number of miles per hour an automobile accelerates to from
a complete stop (0-60) as one of the standard
measurements of performance
- 60 Minutes, a CBS investigative television
show
- Sixty Minute Man was a
TV show starring Kenny Baumann
- The
number of the European route E60
from Brest,
France, to ConstanÅ£a, Romania
- Municipal Okrug 60, name of
Posadsky Municipal Okrug of
Petrogradsky
District of St. Petersburg, Russia until April
2009
- A
common speed limit, in miles per hour,
for freeways in many U.S. states
- A
common speed limit, in kilometers per
hour, in urban areas in Russia
- In years of marriage, the diamond wedding
anniversary
- The maximum number of marbles (game
pieces) in Chinese checkers
- The
code for
international direct dial calls to Malaysia
- The highest obtainable level on World of Warcraft (not including World of Warcraft: The
Burning Crusade)
- Studio 60 on the
Sunset Strip was a TV show on NBC
(2006-07)
- Gone in Sixty
Seconds is a movie starring Nicolas Cage
- Miss Sixty is a women's apparel
brand
- The total number of cards in the game Racko
- The
number of the French department
Oise
- Alpha 60 is a brain-computer in the movie Alphaville directed by Jean-Luc Godard
- The age for senior citizen in
some cultures
In sports
Historical years
60 A.D.,
60
B.C.,
1960,
2060,
etc.
References