685373626872 has 48 divisors (see below), whose sum is σ = 2024967536280. Its totient is φ = 207688977600.

The previous prime is 685373626813. The next prime is 685373626939. The reversal of 685373626872 is 278626373586.

685373626872 is a `hidden beast` number, since 6 + 8 + 537 + 3 + 6 + 26 + 8 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432684579 + ... + 432686162.

Almost surely, 2^685373626872 is an apocalyptic number.

It is an amenable number.

685373626872 is an abundant number, since it is smaller than the sum of its proper divisors (1339593909408).

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

685373626872 is a wasteful number, since it uses less digits than its factorization.

685373626872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865370764 (or 865370757 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 685373626872 in words is "six hundred eighty-five billion, three hundred seventy-three million, six hundred twenty-six thousand, eight hundred seventy-two".