56979659 has 4 divisors (see below), whose sum is σ = 62159640. Its totient is φ = 51799680.

The previous prime is 56979653. The next prime is 56979677. The reversal of 56979659 is 95697965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56979659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56979653) 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, 2589974 + ... + 2589995.

It is an arithmetic number, because the mean of its divisors is an integer number (15539910).

Almost surely, 2^56979659 is an apocalyptic number.

56979659 is a deficient number, since it is larger than the sum of its proper divisors (5179981).

56979659 is a wasteful number, since it uses less digits than its factorization.

56979659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179980.

The product of its digits is 4592700, while the sum is 56.

The square root of 56979659 is about 7548.4871994327. The cubic root of 56979659 is about 384.8043285222.

The spelling of 56979659 in words is "fifty-six million, nine hundred seventy-nine thousand, six hundred fifty-nine".