56684990 has 16 divisors (see below), whose sum is σ = 103181040. Its totient is φ = 22418880.

The previous prime is 56684911. The next prime is 56685029. The reversal of 56684990 is 9948665.

It is a Curzon number.

It is a congruent number.

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, 30956 + ... + 32735.

It is an arithmetic number, because the mean of its divisors is an integer number (6448815).

Almost surely, 2^56684990 is an apocalyptic number.

56684990 is a deficient number, since it is larger than the sum of its proper divisors (46496050).

56684990 is a wasteful number, since it uses less digits than its factorization.

56684990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63787.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 56684990 is about 7528.9434849785. The cubic root of 56684990 is about 384.1398461635.

The spelling of 56684990 in words is "fifty-six million, six hundred eighty-four thousand, nine hundred ninety".