56615967 has 18 divisors (see below), whose sum is σ = 86876088. Its totient is φ = 35522112.

The previous prime is 56615929. The next prime is 56616023. The reversal of 56615967 is 76951665.

56615967 is a `hidden beast` number, since 56 + 6 + 1 + 596 + 7 = 666.

It is not a de Polignac number, because 56615967 - 2¹⁸ = 56353823 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56615267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8283 + ... + 13484.

Almost surely, 2^56615967 is an apocalyptic number.

56615967 is a deficient number, since it is larger than the sum of its proper divisors (30260121).

56615967 is a wasteful number, since it uses less digits than its factorization.

56615967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21807 (or 21787 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 56615967 is about 7524.3582450598. The cubic root of 56615967 is about 383.9838656958.

It can be divided in two parts, 5661 and 5967, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 56615967 in words is "fifty-six million, six hundred fifteen thousand, nine hundred sixty-seven".