56655684 has 36 divisors (see below), whose sum is σ = 143527020. Its totient is φ = 18843840.

The previous prime is 56655659. The next prime is 56655691. The reversal of 56655684 is 48655665.

It is a happy number.

56655684 is a `hidden beast` number, since 566 + 5 + 5 + 6 + 84 = 666.

56655684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 36942084 + 19713600 = 6078^2 + 4440^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×56655684³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18022 + ... + 20930.

Almost surely, 2^56655684 is an apocalyptic number.

It is an amenable number.

56655684 is an abundant number, since it is smaller than the sum of its proper divisors (86871336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56655684 is a wasteful number, since it uses less digits than its factorization.

56655684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460 (or 3455 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 56655684 is about 7526.9970107607. The cubic root of 56655684 is about 384.0736349676.

Adding to 56655684 its sum of digits (45), we get a square (56655729 = 7527²).

The spelling of 56655684 in words is "fifty-six million, six hundred fifty-five thousand, six hundred eighty-four".