56727664 has 40 divisors (see below), whose sum is σ = 128543360. Its totient is φ = 23744448.

The previous prime is 56727659. The next prime is 56727677. The reversal of 56727664 is 46672765.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 56727664.

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 7 ways as a sum of consecutive naturals, for example, 1074 + ... + 10705.

It is an arithmetic number, because the mean of its divisors is an integer number (3213584).

Almost surely, 2^56727664 is an apocalyptic number.

It is an amenable number.

56727664 is an abundant number, since it is smaller than the sum of its proper divisors (71815696).

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

56727664 is a wasteful number, since it uses less digits than its factorization.

56727664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11837 (or 11831 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 56727664 is about 7531.7769483702. The cubic root of 56727664 is about 384.2362189533.

The spelling of 56727664 in words is "fifty-six million, seven hundred twenty-seven thousand, six hundred sixty-four".