318768680 has 16 divisors (see below), whose sum is σ = 717229620. Its totient is φ = 127507456.

The previous prime is 318768677. The next prime is 318768733. The reversal of 318768680 is 86867813.

It can be written as a sum of positive squares in 2 ways, for example, as 318765316 + 3364 = 17854^2 + 58^2 .

It is a super-2 number, since 2×318768680² = 203226942697884800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3984569 + ... + 3984648.

Almost surely, 2^318768680 is an apocalyptic number.

It is an amenable number.

318768680 is an abundant number, since it is smaller than the sum of its proper divisors (398460940).

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

318768680 is a wasteful number, since it uses less digits than its factorization.

318768680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969228 (or 7969224 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 318768680 is about 17854.0942083322. The cubic root of 318768680 is about 683.1119478486. Note that the first 3 decimals are identical.

The spelling of 318768680 in words is "three hundred eighteen million, seven hundred sixty-eight thousand, six hundred eighty".