680768680 has 64 divisors (see below), whose sum is σ = 1614919680. Its totient is φ = 257894400.

The previous prime is 680768663. The next prime is 680768701. The reversal of 680768680 is 86867086.

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 15 ways as a sum of consecutive naturals, for example, 52440 + ... + 64120.

It is an arithmetic number, because the mean of its divisors is an integer number (25233120).

Almost surely, 2^680768680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680768680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807459840).

680768680 is an abundant number, since it is smaller than the sum of its proper divisors (934151000).

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

680768680 is a wasteful number, since it uses less digits than its factorization.

680768680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11770 (or 11766 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 680768680 is about 26091.5442241351. The cubic root of 680768680 is about 879.6971581891.

The spelling of 680768680 in words is "six hundred eighty million, seven hundred sixty-eight thousand, six hundred eighty".