668303980 has 12 divisors (see below), whose sum is σ = 1403438400. Its totient is φ = 267321584.

The previous prime is 668303959. The next prime is 668304011. The reversal of 668303980 is 89303866.

668303980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16707580 + ... + 16707619.

It is an arithmetic number, because the mean of its divisors is an integer number (116953200).

Almost surely, 2^668303980 is an apocalyptic number.

It is an amenable number.

668303980 is an abundant number, since it is smaller than the sum of its proper divisors (735134420).

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

668303980 is a wasteful number, since it uses less digits than its factorization.

668303980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33415208 (or 33415206 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 668303980 is about 25851.5759674338. The cubic root of 668303980 is about 874.2950425326.

The spelling of 668303980 in words is "six hundred sixty-eight million, three hundred three thousand, nine hundred eighty".