56456664 has 48 divisors (see below), whose sum is σ = 155147160. Its totient is φ = 17107200.

The previous prime is 56456641. The next prime is 56456693. The reversal of 56456664 is 46665465.

It is a happy number.

It is a congruent number.

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, 6817 + ... + 12624.

Almost surely, 2^56456664 is an apocalyptic number.

It is an amenable number.

56456664 is an abundant number, since it is smaller than the sum of its proper divisors (98690496).

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

56456664 is a wasteful number, since it uses less digits than its factorization.

56456664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19472 (or 19457 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 56456664 is about 7513.7649683764. The cubic root of 56456664 is about 383.6233829148.

The spelling of 56456664 in words is "fifty-six million, four hundred fifty-six thousand, six hundred sixty-four".