56686671 has 12 divisors (see below), whose sum is σ = 86190520. Its totient is φ = 35802000.

The previous prime is 56686657. The next prime is 56686691. The reversal of 56686671 is 17668665.

56686671 is a `hidden beast` number, since 566 + 86 + 6 + 7 + 1 = 666.

It is not a de Polignac number, because 56686671 - 2¹⁴ = 56670287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56686691) 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, 165580 + ... + 165921.

Almost surely, 2^56686671 is an apocalyptic number.

56686671 is a deficient number, since it is larger than the sum of its proper divisors (29503849).

56686671 is a wasteful number, since it uses less digits than its factorization.

56686671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331526 (or 331523 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 56686671 is about 7529.0551200001. The cubic root of 56686671 is about 384.1436433633.

The spelling of 56686671 in words is "fifty-six million, six hundred eighty-six thousand, six hundred seventy-one".