685182976 has 39 divisors (see below), whose sum is σ = 1373556981. Its totient is φ = 341753856.

The previous prime is 685182961. The next prime is 685183001. The reversal of 685182976 is 679281586.

The square root of 685182976 is 26176.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 626200576 + 58982400 = 25024^2 + 7680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1675060 + ... + 1675468.

Almost surely, 2^685182976 is an apocalyptic number.

685182976 is the 26176-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685182976

685182976 is an abundant number, since it is smaller than the sum of its proper divisors (688374005).

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

685182976 is an frugal number, since it uses more digits than its factorization.

685182976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 411 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The cubic root of 685182976 is about 881.5944646299.

The spelling of 685182976 in words is "six hundred eighty-five million, one hundred eighty-two thousand, nine hundred seventy-six".