680866800 has 60 divisors (see below), whose sum is σ = 2181047160. Its totient is φ = 181564160.

The previous prime is 680866757. The next prime is 680866807. The reversal of 680866800 is 8668086.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680866807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282495 + ... + 284894.

It is an arithmetic number, because the mean of its divisors is an integer number (36350786).

Almost surely, 2^680866800 is an apocalyptic number.

680866800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680866800 is an abundant number, since it is smaller than the sum of its proper divisors (1500180360).

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

680866800 is a wasteful number, since it uses less digits than its factorization.

680866800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567410 (or 567399 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 680866800 is about 26093.4244590471. The cubic root of 680866800 is about 879.7394200916.

The spelling of 680866800 in words is "six hundred eighty million, eight hundred sixty-six thousand, eight hundred".