685316188 has 24 divisors (see below), whose sum is σ = 1253927808. Its totient is φ = 327110256.

The previous prime is 685316167. The next prime is 685316201. The reversal of 685316188 is 881613586.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40995 + ... + 55237.

It is an arithmetic number, because the mean of its divisors is an integer number (52246992).

Almost surely, 2^685316188 is an apocalyptic number.

It is an amenable number.

685316188 is a deficient number, since it is larger than the sum of its proper divisors (568611620).

685316188 is a wasteful number, since it uses less digits than its factorization.

685316188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14793 (or 14791 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The square root of 685316188 is about 26178.5444209566. The cubic root of 685316188 is about 881.6515935799.

The spelling of 685316188 in words is "six hundred eighty-five million, three hundred sixteen thousand, one hundred eighty-eight".