684873320 has 16 divisors (see below), whose sum is σ = 1540965060. Its totient is φ = 273949312.

The previous prime is 684873317. The next prime is 684873347. The reversal of 684873320 is 23378486.

It can be written as a sum of positive squares in 2 ways, for example, as 677977444 + 6895876 = 26038^2 + 2626^2 .

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 3 ways as a sum of consecutive naturals, for example, 8560877 + ... + 8560956.

Almost surely, 2^684873320 is an apocalyptic number.

It is an amenable number.

684873320 is an abundant number, since it is smaller than the sum of its proper divisors (856091740).

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

684873320 is a wasteful number, since it uses less digits than its factorization.

684873320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17121844 (or 17121840 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 684873320 is about 26170.0844477048. The cubic root of 684873320 is about 881.4616377502.

The spelling of 684873320 in words is "six hundred eighty-four million, eight hundred seventy-three thousand, three hundred twenty".