56687655 has 16 divisors (see below), whose sum is σ = 90969984. Its totient is φ = 30143520.

The previous prime is 56687647. The next prime is 56687669. The reversal of 56687655 is 55678665.

56687655 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 56687655 - 2³ = 56687647 is a prime.

It is a congruent 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, 241 + ... + 10650.

It is an arithmetic number, because the mean of its divisors is an integer number (5685624).

Almost surely, 2^56687655 is an apocalyptic number.

56687655 is a deficient number, since it is larger than the sum of its proper divisors (34282329).

56687655 is a wasteful number, since it uses less digits than its factorization.

56687655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11246.

The product of its digits is 1512000, while the sum is 48.

The square root of 56687655 is about 7529.1204665618. The cubic root of 56687655 is about 384.1458660796.

The spelling of 56687655 in words is "fifty-six million, six hundred eighty-seven thousand, six hundred fifty-five".