687086124 has 24 divisors (see below), whose sum is σ = 1603660800. Its totient is φ = 228963024.

The previous prime is 687086119. The next prime is 687086131. The reversal of 687086124 is 421680786.

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 7 ways as a sum of consecutive naturals, for example, 54577 + ... + 65975.

It is an arithmetic number, because the mean of its divisors is an integer number (66819200).

Almost surely, 2^687086124 is an apocalyptic number.

It is an amenable number.

687086124 is an abundant number, since it is smaller than the sum of its proper divisors (916574676).

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

687086124 is a wasteful number, since it uses less digits than its factorization.

687086124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16429 (or 16427 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 687086124 is about 26212.3277104495. The cubic root of 687086124 is about 882.4099420441.

The spelling of 687086124 in words is "six hundred eighty-seven million, eighty-six thousand, one hundred twenty-four".