680068128 has 24 divisors (see below), whose sum is σ = 1785179088. Its totient is φ = 226689344.

The previous prime is 680068093. The next prime is 680068141. The reversal of 680068128 is 821860086.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3541926 + ... + 3542117.

It is an arithmetic number, because the mean of its divisors is an integer number (74382462).

Almost surely, 2^680068128 is an apocalyptic number.

It is an amenable number.

680068128 is an abundant number, since it is smaller than the sum of its proper divisors (1105110960).

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

680068128 is a wasteful number, since it uses less digits than its factorization.

680068128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7084056 (or 7084048 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 680068128 is about 26078.1158828624. The cubic root of 680068128 is about 879.3953008247.

The spelling of 680068128 in words is "six hundred eighty million, sixty-eight thousand, one hundred twenty-eight".