680906128 has 20 divisors (see below), whose sum is σ = 1507720960. Its totient is φ = 291816864.

The previous prime is 680906119. The next prime is 680906179. The reversal of 680906128 is 821609086.

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 3 ways as a sum of consecutive naturals, for example, 3039648 + ... + 3039871.

It is an arithmetic number, because the mean of its divisors is an integer number (75386048).

Almost surely, 2^680906128 is an apocalyptic number.

It is an amenable number.

680906128 is an abundant number, since it is smaller than the sum of its proper divisors (826814832).

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

680906128 is a wasteful number, since it uses less digits than its factorization.

680906128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6079534 (or 6079528 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 680906128 is about 26094.1780479861. The cubic root of 680906128 is about 879.7563581700.

The spelling of 680906128 in words is "six hundred eighty million, nine hundred six thousand, one hundred twenty-eight".