56656986 has 16 divisors (see below), whose sum is σ = 114207744. Its totient is φ = 18736704.

The previous prime is 56656973. The next prime is 56656987. The reversal of 56656986 is 68965665.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56656987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36415 + ... + 37938.

It is an arithmetic number, because the mean of its divisors is an integer number (7137984).

Almost surely, 2^56656986 is an apocalyptic number.

56656986 is an abundant number, since it is smaller than the sum of its proper divisors (57550758).

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

56656986 is a wasteful number, since it uses less digits than its factorization.

56656986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74485.

The product of its digits is 2332800, while the sum is 51.

The square root of 56656986 is about 7527.0834989390. The cubic root of 56656986 is about 384.0765770674.

The spelling of 56656986 in words is "fifty-six million, six hundred fifty-six thousand, nine hundred eighty-six".