684080868 has 24 divisors (see below), whose sum is σ = 1598285920. Its totient is φ = 227727360.

The previous prime is 684080861. The next prime is 684080879. The reversal of 684080868 is 868080486.

684080868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (684080861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27838 + ... + 46293.

Almost surely, 2^684080868 is an apocalyptic number.

It is an amenable number.

684080868 is an abundant number, since it is smaller than the sum of its proper divisors (914205052).

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

684080868 is a wasteful number, since it uses less digits than its factorization.

684080868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74907 (or 74905 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The square root of 684080868 is about 26154.9396481812. The cubic root of 684080868 is about 881.1215331872.

The spelling of 684080868 in words is "six hundred eighty-four million, eighty thousand, eight hundred sixty-eight".