56765631 has 16 divisors (see below), whose sum is σ = 81648000. Its totient is φ = 34873440.

The previous prime is 56765623. The next prime is 56765641. The reversal of 56765631 is 13656765.

It is not a de Polignac number, because 56765631 - 2³ = 56765623 is a prime.

It is a super-2 number, since 2×56765631² = 6444673725656322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 56765631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56765641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37120 + ... + 38618.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^56765631 is an apocalyptic number.

56765631 is a deficient number, since it is larger than the sum of its proper divisors (24882369).

56765631 is a wasteful number, since it uses less digits than its factorization.

56765631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486.

The product of its digits is 113400, while the sum is 39.

The square root of 56765631 is about 7534.2969811390. The cubic root of 56765631 is about 384.3219210730.

The spelling of 56765631 in words is "fifty-six million, seven hundred sixty-five thousand, six hundred thirty-one".