56707720 has 16 divisors (see below), whose sum is σ = 127592460. Its totient is φ = 22683072.

The previous prime is 56707681. The next prime is 56707747. The reversal of 56707720 is 2770765.

It can be written as a sum of positive squares in 2 ways, for example, as 56280004 + 427716 = 7502^2 + 654^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708807 + ... + 708886.

Almost surely, 2^56707720 is an apocalyptic number.

It is an amenable number.

56707720 is an abundant number, since it is smaller than the sum of its proper divisors (70884740).

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

56707720 is a wasteful number, since it uses less digits than its factorization.

56707720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417704 (or 1417700 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 56707720 is about 7530.4528416291. The cubic root of 56707720 is about 384.1911844566.

The spelling of 56707720 in words is "fifty-six million, seven hundred seven thousand, seven hundred twenty".