56979566 has 32 divisors (see below), whose sum is σ = 100024320. Its totient is φ = 23841216.

The previous prime is 56979521. The next prime is 56979599. The reversal of 56979566 is 66597965.

Its product of digits (3061800) is a multiple of the sum of its prime divisors (648).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129575 + ... + 130013.

It is an arithmetic number, because the mean of its divisors is an integer number (3125760).

Almost surely, 2^56979566 is an apocalyptic number.

56979566 is a deficient number, since it is larger than the sum of its proper divisors (43044754).

56979566 is a wasteful number, since it uses less digits than its factorization.

56979566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its digits is 3061800, while the sum is 53.

The square root of 56979566 is about 7548.4810392555. The cubic root of 56979566 is about 384.8041191679.

The spelling of 56979566 in words is "fifty-six million, nine hundred seventy-nine thousand, five hundred sixty-six".