680290880 has 56 divisors (see below), whose sum is σ = 1663753848. Its totient is φ = 264757248.

The previous prime is 680290879. The next prime is 680290931. The reversal of 680290880 is 88092086.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 263477824 + 416813056 = 16232^2 + 20416^2 .

It is a super-2 number, since 2×680290880² = 925591362822348800, which contains 22 as substring.

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, 16889 + ... + 40568.

Almost surely, 2^680290880 is an apocalyptic number.

It is an amenable number.

680290880 is an abundant number, since it is smaller than the sum of its proper divisors (983462968).

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

680290880 is a wasteful number, since it uses less digits than its factorization.

680290880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57511 (or 57501 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 680290880 is about 26082.3863938866. The cubic root of 680290880 is about 879.4913037939.

The spelling of 680290880 in words is "six hundred eighty million, two hundred ninety thousand, eight hundred eighty".