56650566 has 32 divisors (see below), whose sum is σ = 132134400. Its totient is φ = 16185288.

The previous prime is 56650553. The next prime is 56650567. The reversal of 56650566 is 66505665.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56650567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11706 + ... + 15821.

It is an arithmetic number, because the mean of its divisors is an integer number (4129200).

Almost surely, 2^56650566 is an apocalyptic number.

56650566 is an abundant number, since it is smaller than the sum of its proper divisors (75483834).

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

56650566 is a wasteful number, since it uses less digits than its factorization.

56650566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27553 (or 27539 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 56650566 is about 7526.6570268613. The cubic root of 56650566 is about 384.0620695022.

The spelling of 56650566 in words is "fifty-six million, six hundred fifty thousand, five hundred sixty-six".