680511628 has 24 divisors (see below), whose sum is σ = 1230364800. Its totient is φ = 328997760.

The previous prime is 680511583. The next prime is 680511647. The reversal of 680511628 is 826115086.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 265698 + ... + 268246.

It is an arithmetic number, because the mean of its divisors is an integer number (51265200).

Almost surely, 2^680511628 is an apocalyptic number.

It is an amenable number.

680511628 is a deficient number, since it is larger than the sum of its proper divisors (549853172).

680511628 is a wasteful number, since it uses less digits than its factorization.

680511628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737 (or 4735 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 680511628 is about 26086.6177953371. The cubic root of 680511628 is about 879.5864223950.

The spelling of 680511628 in words is "six hundred eighty million, five hundred eleven thousand, six hundred twenty-eight".