684971304 has 32 divisors (see below), whose sum is σ = 1715472000. Its totient is φ = 227917952.

The previous prime is 684971263. The next prime is 684971341. The reversal of 684971304 is 403179486.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11424 + ... + 38735.

It is an arithmetic number, because the mean of its divisors is an integer number (53608500).

Almost surely, 2^684971304 is an apocalyptic number.

It is an amenable number.

684971304 is an abundant number, since it is smaller than the sum of its proper divisors (1030500696).

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

684971304 is a wasteful number, since it uses less digits than its factorization.

684971304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50737 (or 50733 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 684971304 is about 26171.9564419628. The cubic root of 684971304 is about 881.5036722968.

The spelling of 684971304 in words is "six hundred eighty-four million, nine hundred seventy-one thousand, three hundred four".