684830680 has 32 divisors (see below), whose sum is σ = 1621969200. Its totient is φ = 259514496.

The previous prime is 684830677. The next prime is 684830693. The reversal of 684830680 is 86038486.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 449787 + ... + 451306.

Almost surely, 2^684830680 is an apocalyptic number.

It is an amenable number.

684830680 is an abundant number, since it is smaller than the sum of its proper divisors (937138520).

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

684830680 is a wasteful number, since it uses less digits than its factorization.

684830680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901123 (or 901119 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 684830680 is about 26169.2697643629. The cubic root of 684830680 is about 881.4433441947.

The spelling of 684830680 in words is "six hundred eighty-four million, eight hundred thirty thousand, six hundred eighty".