Number of the day: 68956

Properties of the number 68956:

68956 = 2² × 17239 is the 62103^th composite number and is not squarefree.
68956 has 2 distinct prime factors, 6 divisors, 3 antidivisors and 34476 totatives.
68956 has a semiprime digit sum 34 in base 10.
68956 has a Fibonacci digit sum 34 in base 10.
Reversing the decimal digits of 68956 results in a semiprime.
68956 = 2³ + 3³ + 41³ is the sum of 3 positive cubes in 1 way.
68956 = 17240² - 17238² is the difference of 2 nonnegative squares in 1 way.
68956 is the difference of 2 positive pentagonal numbers in 1 way.
68956 is not the sum of 3 positive squares.
68956² is the sum of 3 positive squares.
68956 is a proper divisor of 509¹⁷ - 1.
68956 in base 51 = QQ4 and consists of only the digits '4' and 'Q'.

The number 68956 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequences (among others):

Sequence numbers and descriptions below are taken from OEIS.
A032375: Numbers n such that 51*2^n+1 is prime.
A184642: Number of partitions of n having no parts with multiplicity 7.