687086568 has 48 divisors (see below), whose sum is σ = 2126698080. Its totient is φ = 196310304.

The previous prime is 687086549. The next prime is 687086611. The reversal of 687086568 is 865680786.

687086568 is a `hidden beast` number, since 6 + 8 + 70 + 8 + 6 + 568 = 666.

687086568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681130 + ... + 682137.

It is an arithmetic number, because the mean of its divisors is an integer number (44306210).

Almost surely, 2^687086568 is an apocalyptic number.

It is an amenable number.

687086568 is an abundant number, since it is smaller than the sum of its proper divisors (1439611512).

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

687086568 is a wasteful number, since it uses less digits than its factorization.

687086568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363286 (or 1363279 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The square root of 687086568 is about 26212.3361797456. The cubic root of 687086568 is about 882.4101321173.

The spelling of 687086568 in words is "six hundred eighty-seven million, eighty-six thousand, five hundred sixty-eight".