57206660 has 48 divisors (see below), whose sum is σ = 137773440. Its totient is φ = 19545600.

The previous prime is 57206659. The next prime is 57206707. The reversal of 57206660 is 6660275.

57206660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55631 + ... + 56649.

It is an arithmetic number, because the mean of its divisors is an integer number (2870280).

Almost surely, 2^57206660 is an apocalyptic number.

It is an amenable number.

57206660 is an abundant number, since it is smaller than the sum of its proper divisors (80566780).

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

57206660 is a wasteful number, since it uses less digits than its factorization.

57206660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57206660 is about 7563.5084451596. The cubic root of 57206660 is about 385.3146581494.

The spelling of 57206660 in words is "fifty-seven million, two hundred six thousand, six hundred sixty".