685759632 has 40 divisors (see below), whose sum is σ = 1772490720. Its totient is φ = 228464640.

The previous prime is 685759589. The next prime is 685759661. The reversal of 685759632 is 236957586.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157744 + ... + 162032.

It is an arithmetic number, because the mean of its divisors is an integer number (44312268).

Almost surely, 2^685759632 is an apocalyptic number.

It is an amenable number.

685759632 is an abundant number, since it is smaller than the sum of its proper divisors (1086731088).

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

685759632 is a wasteful number, since it uses less digits than its factorization.

685759632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631 (or 7625 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 685759632 is about 26187.0126589499. The cubic root of 685759632 is about 881.8417144907.

The spelling of 685759632 in words is "six hundred eighty-five million, seven hundred fifty-nine thousand, six hundred thirty-two".