56715620 has 24 divisors (see below), whose sum is σ = 128265144. Its totient is φ = 20941056.

The previous prime is 56715599. The next prime is 56715649. The reversal of 56715620 is 2651765.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4990756 + 51724864 = 2234^2 + 7192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108809 + ... + 109328.

It is an arithmetic number, because the mean of its divisors is an integer number (5344381).

Almost surely, 2^56715620 is an apocalyptic number.

It is an amenable number.

56715620 is an abundant number, since it is smaller than the sum of its proper divisors (71549524).

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

56715620 is a wasteful number, since it uses less digits than its factorization.

56715620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218159 (or 218157 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 56715620 is about 7530.9773602103. The cubic root of 56715620 is about 384.2090242935.

The spelling of 56715620 in words is "fifty-six million, seven hundred fifteen thousand, six hundred twenty".