685149437175576 has 32 divisors (see below), whose sum is σ = 1712882743945200. Its totient is φ = 228381925591040.

The previous prime is 685149437175547. The next prime is 685149437175613. The reversal of 685149437175576 is 675571734941586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71666865 + ... + 80662496.

Almost surely, 2^{685149437175576} is an apocalyptic number.

It is an amenable number.

685149437175576 is an abundant number, since it is smaller than the sum of its proper divisors (1027733306769624).

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

685149437175576 is a wasteful number, since it uses less digits than its factorization.

685149437175576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152516779 (or 152516775 counting only the distinct ones).

The product of its digits is 5334336000, while the sum is 78.

The spelling of 685149437175576 in words is "six hundred eighty-five trillion, one hundred forty-nine billion, four hundred thirty-seven million, one hundred seventy-five thousand, five hundred seventy-six".