687373684 has 24 divisors (see below), whose sum is σ = 1229880960. Its totient is φ = 335995776.

The previous prime is 687373669. The next prime is 687373711. The reversal of 687373684 is 486373786.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242427 + ... + 245245.

It is an arithmetic number, because the mean of its divisors is an integer number (51245040).

Almost surely, 2^687373684 is an apocalyptic number.

It is an amenable number.

687373684 is a deficient number, since it is larger than the sum of its proper divisors (542507276).

687373684 is a wasteful number, since it uses less digits than its factorization.

687373684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167 (or 4165 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The square root of 687373684 is about 26217.8123419938. The cubic root of 687373684 is about 882.5330272504.

It can be divided in two parts, 68737368 and 4, that multiplied together give a palindrome (274949472).

The spelling of 687373684 in words is "six hundred eighty-seven million, three hundred seventy-three thousand, six hundred eighty-four".