56684979 has 12 divisors (see below), whose sum is σ = 88176816. Its totient is φ = 34882992.

The previous prime is 56684911. The next prime is 56685029. The reversal of 56684979 is 97948665.

56684979 is a `hidden beast` number, since 566 + 8 + 4 + 9 + 79 = 666.

It is not a de Polignac number, because 56684979 - 2¹³ = 56676787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56684179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242127 + ... + 242360.

It is an arithmetic number, because the mean of its divisors is an integer number (7348068).

Almost surely, 2^56684979 is an apocalyptic number.

56684979 is a deficient number, since it is larger than the sum of its proper divisors (31491837).

56684979 is a wasteful number, since it uses less digits than its factorization.

56684979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484506 (or 484503 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 56684979 is about 7528.9427544643. The cubic root of 56684979 is about 384.1398213154.

It can be divided in two parts, 56 and 684979, that added together give a triangular number (685035 = T₁₁₇₀).

The spelling of 56684979 in words is "fifty-six million, six hundred eighty-four thousand, nine hundred seventy-nine".