56687000084 has 108 divisors (see below), whose sum is σ = 119137749948. Its totient is φ = 23570426880.

The previous prime is 56687000081. The next prime is 56687000087. The reversal of 56687000084 is 48000078665.

It is an interprime number because it is at equal distance from previous prime (56687000081) and next prime (56687000087).

It can be written as a sum of positive squares in 6 ways, for example, as 9154279684 + 47532720400 = 95678^2 + 218020^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 56686999999 and 56687000044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56687000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9239882 + ... + 9246014.

Almost surely, 2^56687000084 is an apocalyptic number.

It is an amenable number.

56687000084 is an abundant number, since it is smaller than the sum of its proper divisors (62450749864).

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

56687000084 is a wasteful number, since it uses less digits than its factorization.

With its successor (56687000085) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (6298).

56687000084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298 (or 6272 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 56687000084 in words is "fifty-six billion, six hundred eighty-seven million, eighty-four", and thus it is an aban number.