56565680 has 20 divisors (see below), whose sum is σ = 131515392. Its totient is φ = 22626240.

The previous prime is 56565667. The next prime is 56565713. The reversal of 56565680 is 8656565.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353456 + ... + 353615.

Almost surely, 2^56565680 is an apocalyptic number.

It is an amenable number.

56565680 is an abundant number, since it is smaller than the sum of its proper divisors (74949712).

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

56565680 is a wasteful number, since it uses less digits than its factorization.

56565680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707084 (or 707078 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 56565680 is about 7521.0158888278. The cubic root of 56565680 is about 383.8701456185.

The spelling of 56565680 in words is "fifty-six million, five hundred sixty-five thousand, six hundred eighty".