684371716 has 48 divisors (see below), whose sum is σ = 1503452160. Its totient is φ = 265779360.

The previous prime is 684371599. The next prime is 684371741. The reversal of 684371716 is 617173486.

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 15 ways as a sum of consecutive naturals, for example, 15730 + ... + 40201.

It is an arithmetic number, because the mean of its divisors is an integer number (31321920).

Almost surely, 2^684371716 is an apocalyptic number.

It is an amenable number.

684371716 is an abundant number, since it is smaller than the sum of its proper divisors (819080444).

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

684371716 is a wasteful number, since it uses less digits than its factorization.

684371716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55984 (or 55982 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 684371716 is about 26160.4991542593. The cubic root of 684371716 is about 881.2463898315.

The spelling of 684371716 in words is "six hundred eighty-four million, three hundred seventy-one thousand, seven hundred sixteen".