680736936 has 128 divisors (see below), whose sum is σ = 1930199040. Its totient is φ = 198201600.

The previous prime is 680736893. The next prime is 680736941. The reversal of 680736936 is 639637086.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1824846 + ... + 1825218.

It is an arithmetic number, because the mean of its divisors is an integer number (15079680).

Almost surely, 2^680736936 is an apocalyptic number.

680736936 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680736936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965099520).

680736936 is an abundant number, since it is smaller than the sum of its proper divisors (1249462104).

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

680736936 is a wasteful number, since it uses less digits than its factorization.

680736936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 680736936 is about 26090.9358973572. The cubic root of 680736936 is about 879.6834846554.

The spelling of 680736936 in words is "six hundred eighty million, seven hundred thirty-six thousand, nine hundred thirty-six".