35 (
thirty-five) is the
natural number following
34 and preceding
36.
In mathematics
35 is a tetrahedral number
The 35 free hexominoes
35 is the sum of the first five
triangular numbers, making it a
tetrahedral number.
35 is a
centered cube number, a
pentagonal number and a
pentatope number.
35 is a
highly cototient
number, since there are more solutions to the equation
x - φ(
x) = 35 than there are for any other
integers below it except 1.
There are 35
hexominoes, the
polyominoes made from 6 squares.
Since the greatest prime factor of 35
^{2} + 1 = 1226 is
613, which is obviously more than 35 twice, 35 is a
Størmer number.
35 is a discrete
semiprime (or biprime) (5
x 7); the tenth, and the first with 5 as the lowest non-unitary
factor. The aliquot sum of 35 is 13 this being the second
composite number with such an aliquot sum;
the first being the cube 27. 35 is the last member of the first
triple cluster of semiprimes 33,34,35. 85,86,87 is the second such
triple discrete semiprime cluster.
35 is the highest number one can count to on one's fingers using
base 6.
In science
Astronomy
In other fields
35 is also:
Historical years
35 A.D.,
35
B.C.,
1935,
2035,
etc.
References