56640772 has 12 divisors (see below), whose sum is σ = 99210496. Its totient is φ = 28294920.

The previous prime is 56640763. The next prime is 56640797. The reversal of 56640772 is 27704665.

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, 828 + ... + 10675.

Almost surely, 2^56640772 is an apocalyptic number.

It is an amenable number.

56640772 is a deficient number, since it is larger than the sum of its proper divisors (42569724).

56640772 is a wasteful number, since it uses less digits than its factorization.

56640772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738 (or 12736 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 56640772 is about 7526.0063778873. The cubic root of 56640772 is about 384.0399354444.

The spelling of 56640772 in words is "fifty-six million, six hundred forty thousand, seven hundred seventy-two".