56979690 has 16 divisors (see below), whose sum is σ = 136751328. Its totient is φ = 15194576.

The previous prime is 56979683. The next prime is 56979691. The reversal of 56979690 is 9697965.

It is a super-2 number, since 2×56979690² = 6493370144992200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56979691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949632 + ... + 949691.

It is an arithmetic number, because the mean of its divisors is an integer number (8546958).

Almost surely, 2^56979690 is an apocalyptic number.

56979690 is an abundant number, since it is smaller than the sum of its proper divisors (79771638).

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

56979690 is a wasteful number, since it uses less digits than its factorization.

56979690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899333.

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 56979690 is about 7548.4892528240. The cubic root of 56979690 is about 384.8043983070.

The spelling of 56979690 in words is "fifty-six million, nine hundred seventy-nine thousand, six hundred ninety".