56686355 has 16 divisors (see below), whose sum is σ = 75320064. Its totient is φ = 40608480.

The previous prime is 56686349. The next prime is 56686361. The reversal of 56686355 is 55368665.

It is an interprime number because it is at equal distance from previous prime (56686349) and next prime (56686361).

It is not a de Polignac number, because 56686355 - 2⁴ = 56686339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4007 + ... + 11376.

It is an arithmetic number, because the mean of its divisors is an integer number (4707504).

Almost surely, 2^56686355 is an apocalyptic number.

56686355 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56686355 is a deficient number, since it is larger than the sum of its proper divisors (18633709).

56686355 is a wasteful number, since it uses less digits than its factorization.

56686355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466.

The product of its digits is 648000, while the sum is 44.

The square root of 56686355 is about 7529.0341346019. The cubic root of 56686355 is about 384.1429295587.

The spelling of 56686355 in words is "fifty-six million, six hundred eighty-six thousand, three hundred fifty-five".