686317389700 has 18 divisors (see below), whose sum is σ = 1489308735866. Its totient is φ = 274526955840.

The previous prime is 686317389631. The next prime is 686317389731. The reversal of 686317389700 is 7983713686.

It can be written as a sum of positive squares in 3 ways, for example, as 8079492996 + 678237896704 = 89886^2 + 823552^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3431586849 + ... + 3431587048.

Almost surely, 2^686317389700 is an apocalyptic number.

It is an amenable number.

686317389700 is an abundant number, since it is smaller than the sum of its proper divisors (802991346166).

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

686317389700 is a wasteful number, since it uses less digits than its factorization.

686317389700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863173911 (or 6863173904 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 686317389700 in words is "six hundred eighty-six billion, three hundred seventeen million, three hundred eighty-nine thousand, seven hundred".