680569980 has 24 divisors (see below), whose sum is σ = 1905596112. Its totient is φ = 181485312.

The previous prime is 680569973. The next prime is 680569991. The reversal of 680569980 is 89965086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5671357 + ... + 5671476.

It is an arithmetic number, because the mean of its divisors is an integer number (79399838).

Almost surely, 2^680569980 is an apocalyptic number.

680569980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680569980 is an abundant number, since it is smaller than the sum of its proper divisors (1225026132).

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

680569980 is a wasteful number, since it uses less digits than its factorization.

680569980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11342845 (or 11342843 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 680569980 is about 26087.7361992182. The cubic root of 680569980 is about 879.6115623818.

The spelling of 680569980 in words is "six hundred eighty million, five hundred sixty-nine thousand, nine hundred eighty".