684808677 has 12 divisors (see below), whose sum is σ = 1130477920. Its totient is φ = 391319208.

The previous prime is 684808643. The next prime is 684808679. The reversal of 684808677 is 776808486.

684808677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 684808677 - 2⁷ = 684808549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684808679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5434927 + ... + 5435052.

Almost surely, 2^684808677 is an apocalyptic number.

It is an amenable number.

684808677 is a deficient number, since it is larger than the sum of its proper divisors (445669243).

684808677 is a wasteful number, since it uses less digits than its factorization.

684808677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10869992 (or 10869989 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The square root of 684808677 is about 26168.8493633174. The cubic root of 684808677 is about 881.4339040970.

The spelling of 684808677 in words is "six hundred eighty-four million, eight hundred eight thousand, six hundred seventy-seven".