56686479667 has 4 divisors (see below), whose sum is σ = 56688057720. Its totient is φ = 56684901616.

The previous prime is 56686479653. The next prime is 56686479679. The reversal of 56686479667 is 76697468665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76697468665 = 5 ⋅15339493733.

It is a cyclic number.

It is not a de Polignac number, because 56686479667 - 2²³ = 56678091059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56686479596 and 56686479605.

It is not an unprimeable number, because it can be changed into a prime (56686479697) 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 3 ways as a sum of consecutive naturals, for example, 733858 + ... + 807415.

It is an arithmetic number, because the mean of its divisors is an integer number (14172014430).

Almost surely, 2^56686479667 is an apocalyptic number.

56686479667 is a deficient number, since it is larger than the sum of its proper divisors (1578053).

56686479667 is a wasteful number, since it uses less digits than its factorization.

56686479667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578052.

The product of its digits is 548674560, while the sum is 70.

The spelling of 56686479667 in words is "fifty-six billion, six hundred eighty-six million, four hundred seventy-nine thousand, six hundred sixty-seven".