56911664 has 10 divisors (see below), whose sum is σ = 110266380. Its totient is φ = 28455824.

The previous prime is 56911643. The next prime is 56911681. The reversal of 56911664 is 46611965.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1778474 + ... + 1778505.

It is an arithmetic number, because the mean of its divisors is an integer number (11026638).

Almost surely, 2^56911664 is an apocalyptic number.

It is an amenable number.

56911664 is a deficient number, since it is larger than the sum of its proper divisors (53354716).

56911664 is a wasteful number, since it uses less digits than its factorization.

56911664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556987 (or 3556981 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 56911664 is about 7543.9819724069. The cubic root of 56911664 is about 384.6512026212.

It can be divided in two parts, 56911 and 664, that added together give a palindrome (57575).

The spelling of 56911664 in words is "fifty-six million, nine hundred eleven thousand, six hundred sixty-four".