56720884 has 12 divisors (see below), whose sum is σ = 108285408. Its totient is φ = 25782200.

The previous prime is 56720879. The next prime is 56720887. The reversal of 56720884 is 48802765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56720887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644512 + ... + 644599.

It is an arithmetic number, because the mean of its divisors is an integer number (9023784).

Almost surely, 2^56720884 is an apocalyptic number.

It is an amenable number.

56720884 is a deficient number, since it is larger than the sum of its proper divisors (51564524).

56720884 is a wasteful number, since it uses less digits than its factorization.

56720884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289126 (or 1289124 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 56720884 is about 7531.3268419316. The cubic root of 56720884 is about 384.2209105765.

The spelling of 56720884 in words is "fifty-six million, seven hundred twenty thousand, eight hundred eighty-four".