680184636 has 24 divisors (see below), whose sum is σ = 1604932560. Its totient is φ = 224180352.

The previous prime is 680184623. The next prime is 680184643. The reversal of 680184636 is 636481086.

It is a happy number.

It is a super-2 number, since 2×680184636² = 925302278100904992, which contains 22 as substring.

It is a congruent 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, 317371 + ... + 319506.

It is an arithmetic number, because the mean of its divisors is an integer number (66872190).

Almost surely, 2^680184636 is an apocalyptic number.

It is an amenable number.

680184636 is an abundant number, since it is smaller than the sum of its proper divisors (924747924).

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

680184636 is a wasteful number, since it uses less digits than its factorization.

680184636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636973 (or 636971 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 680184636 is about 26080.3496142210. The cubic root of 680184636 is about 879.4455167433.

The spelling of 680184636 in words is "six hundred eighty million, one hundred eighty-four thousand, six hundred thirty-six".