56687916 has 24 divisors (see below), whose sum is σ = 138023424. Its totient is φ = 18074320.

The previous prime is 56687903. The next prime is 56687923. The reversal of 56687916 is 61978665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102420 + ... + 102971.

It is an arithmetic number, because the mean of its divisors is an integer number (5750976).

Almost surely, 2^56687916 is an apocalyptic number.

It is an amenable number.

56687916 is an abundant number, since it is smaller than the sum of its proper divisors (81335508).

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

56687916 is a wasteful number, since it uses less digits than its factorization.

56687916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205421 (or 205419 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 56687916 is about 7529.1377992437. The cubic root of 56687916 is about 384.1464556372.

The spelling of 56687916 in words is "fifty-six million, six hundred eighty-seven thousand, nine hundred sixteen".