685683106672860 has 72 divisors (see below), whose sum is σ = 2080413835836336. Its totient is φ = 182804132862720.

The previous prime is 685683106672859. The next prime is 685683106672873. The reversal of 685683106672860 is 68276601386586.

685683106672860 is a `hidden beast` number, since 6 + 8 + 568 + 31 + 0 + 6 + 6 + 7 + 28 + 6 + 0 = 666.

It is a super-2 number, since 2×685683106672860² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464840569 + ... + 466313328.

It is an arithmetic number, because the mean of its divisors is an integer number (28894636608838).

Almost surely, 2^{685683106672860} is an apocalyptic number.

685683106672860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685683106672860 is an abundant number, since it is smaller than the sum of its proper divisors (1394730729163476).

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

685683106672860 is a wasteful number, since it uses less digits than its factorization.

685683106672860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931158003 (or 931157998 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 72.

The spelling of 685683106672860 in words is "six hundred eighty-five trillion, six hundred eighty-three billion, one hundred six million, six hundred seventy-two thousand, eight hundred sixty".