685316661176 has 32 divisors (see below), whose sum is σ = 1476649181280. Its totient is φ = 292084444800.

The previous prime is 685316661167. The next prime is 685316661191. The reversal of 685316661176 is 671166613586.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 33795935 + ... + 33816206.

It is an arithmetic number, because the mean of its divisors is an integer number (46145286915).

Almost surely, 2^685316661176 is an apocalyptic number.

It is an amenable number.

685316661176 is an abundant number, since it is smaller than the sum of its proper divisors (791332520104).

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

685316661176 is a wasteful number, since it uses less digits than its factorization.

685316661176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67612335 (or 67612331 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 685316661176 in words is "six hundred eighty-five billion, three hundred sixteen million, six hundred sixty-one thousand, one hundred seventy-six".