56656656 has 60 divisors (see below), whose sum is σ = 181214592. Its totient is φ = 16187328.

The previous prime is 56656643. The next prime is 56656673. The reversal of 56656656 is 65665665.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27096 + ... + 29111.

Almost surely, 2^56656656 is an apocalyptic number.

56656656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56656656 is an abundant number, since it is smaller than the sum of its proper divisors (124557936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56656656 is a wasteful number, since it uses less digits than its factorization.

56656656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56228 (or 56219 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 56656656 is about 7527.0615780662. The cubic root of 56656656 is about 384.0758313782.

Subtracting 56656656 from its reverse (65665665), we obtain a palindrome (9009009).

It can be divided in two parts, 5665 and 6656, that added together give a palindrome (12321).

The spelling of 56656656 in words is "fifty-six million, six hundred fifty-six thousand, six hundred fifty-six".