680394500 has 24 divisors (see below), whose sum is σ = 1485982680. Its totient is φ = 272157600.

The previous prime is 680394497. The next prime is 680394523. The reversal of 680394500 is 5493086.

680394500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 92428996 + 587965504 = 9614^2 + 24248^2 .

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, 679895 + ... + 680894.

It is an arithmetic number, because the mean of its divisors is an integer number (61915945).

Almost surely, 2^680394500 is an apocalyptic number.

It is an amenable number.

680394500 is an abundant number, since it is smaller than the sum of its proper divisors (805588180).

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

680394500 is a wasteful number, since it uses less digits than its factorization.

680394500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360808 (or 1360796 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 680394500 is about 26084.3727162453. The cubic root of 680394500 is about 879.5359554103.

The spelling of 680394500 in words is "six hundred eighty million, three hundred ninety-four thousand, five hundred".