56686672 has 20 divisors (see below), whose sum is σ = 125520736. Its totient is φ = 24294240.

The previous prime is 56686657. The next prime is 56686691. The reversal of 56686672 is 27668665.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252954 + ... + 253177.

Almost surely, 2^56686672 is an apocalyptic number.

It is an amenable number.

56686672 is an abundant number, since it is smaller than the sum of its proper divisors (68834064).

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

56686672 is a wasteful number, since it uses less digits than its factorization.

56686672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506146 (or 506140 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 56686672 is about 7529.0551864095. The cubic root of 56686672 is about 384.1436456222.

The spelling of 56686672 in words is "fifty-six million, six hundred eighty-six thousand, six hundred seventy-two".