56664620 has 12 divisors (see below), whose sum is σ = 118995744. Its totient is φ = 22665840.

The previous prime is 56664613. The next prime is 56664623. The reversal of 56664620 is 2646665.

It is not an unprimeable number, because it can be changed into a prime (56664623) 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, 1416596 + ... + 1416635.

It is an arithmetic number, because the mean of its divisors is an integer number (9916312).

Almost surely, 2^56664620 is an apocalyptic number.

It is an amenable number.

56664620 is an abundant number, since it is smaller than the sum of its proper divisors (62331124).

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

56664620 is a wasteful number, since it uses less digits than its factorization.

56664620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833240 (or 2833238 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 56664620 is about 7527.5905839784. The cubic root of 56664620 is about 384.0938265373.

The spelling of 56664620 in words is "fifty-six million, six hundred sixty-four thousand, six hundred twenty".