685457500032 has 320 divisors, whose sum is σ = 2154328189200. Its totient is φ = 215749287936.

The previous prime is 685457500009. The next prime is 685457500043. The reversal of 685457500032 is 230005754586.

685457500032 is a `hidden beast` number, since 6 + 8 + 545 + 75 + 0 + 0 + 0 + 32 = 666.

685457500032 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61652938 + ... + 61664054.

Almost surely, 2^685457500032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685457500032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077164094600).

685457500032 is an abundant number, since it is smaller than the sum of its proper divisors (1468870689168).

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

685457500032 is a wasteful number, since it uses less digits than its factorization.

685457500032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11475 (or 11454 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 685457500032 in words is "six hundred eighty-five billion, four hundred fifty-seven million, five hundred thousand, thirty-two".