56686568 has 32 divisors (see below), whose sum is σ = 114401160. Its totient is φ = 26234880.

The previous prime is 56686549. The next prime is 56686571. The reversal of 56686568 is 86568665.

It can be written as a sum of positive squares in 4 ways, for example, as 29833444 + 26853124 = 5462^2 + 5182^2 .

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, 4880 + ... + 11712.

Almost surely, 2^56686568 is an apocalyptic number.

It is an amenable number.

56686568 is an abundant number, since it is smaller than the sum of its proper divisors (57714592).

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

56686568 is a wasteful number, since it uses less digits than its factorization.

56686568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917 (or 6913 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The square root of 56686568 is about 7529.0482798293. The cubic root of 56686568 is about 384.1434106994.

The spelling of 56686568 in words is "fifty-six million, six hundred eighty-six thousand, five hundred sixty-eight".