685899160 has 16 divisors (see below), whose sum is σ = 1543273200. Its totient is φ = 274359648.

The previous prime is 685899143. The next prime is 685899161. The reversal of 685899160 is 61998586.

It is a junction number, because it is equal to n+sod(n) for n = 685899098 and 685899107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685899161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8573700 + ... + 8573779.

It is an arithmetic number, because the mean of its divisors is an integer number (96454575).

Almost surely, 2^685899160 is an apocalyptic number.

It is an amenable number.

685899160 is an abundant number, since it is smaller than the sum of its proper divisors (857374040).

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

685899160 is a wasteful number, since it uses less digits than its factorization.

685899160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17147490 (or 17147486 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 685899160 is about 26189.6765921231. The cubic root of 685899160 is about 881.9015183739.

The spelling of 685899160 in words is "six hundred eighty-five million, eight hundred ninety-nine thousand, one hundred sixty".