680566404 has 24 divisors (see below), whose sum is σ = 1814843968. Its totient is φ = 194447520.

The previous prime is 680566391. The next prime is 680566433. The reversal of 680566404 is 404665086.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4050907 + ... + 4051074.

Almost surely, 2^680566404 is an apocalyptic number.

It is an amenable number.

680566404 is an abundant number, since it is smaller than the sum of its proper divisors (1134277564).

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

680566404 is a wasteful number, since it uses less digits than its factorization.

680566404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8101995 (or 8101993 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 680566404 is about 26087.6676611766. The cubic root of 680566404 is about 879.6100217631.

The spelling of 680566404 in words is "six hundred eighty million, five hundred sixty-six thousand, four hundred four".