680981392 has 80 divisors (see below), whose sum is σ = 1638645120. Its totient is φ = 266950656.

The previous prime is 680981387. The next prime is 680981407. The reversal of 680981392 is 293189086.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162459 + ... + 166597.

It is an arithmetic number, because the mean of its divisors is an integer number (20483064).

Almost surely, 2^680981392 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 680981392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819322560).

680981392 is an abundant number, since it is smaller than the sum of its proper divisors (957663728).

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

680981392 is a wasteful number, since it uses less digits than its factorization.

680981392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 680981392 is about 26095.6201689096. The cubic root of 680981392 is about 879.7887716165.

The spelling of 680981392 in words is "six hundred eighty million, nine hundred eighty-one thousand, three hundred ninety-two".