680871628 has 24 divisors (see below), whose sum is σ = 1238186880. Its totient is φ = 327210240.

The previous prime is 680871613. The next prime is 680871629. The reversal of 680871628 is 826178086.

It is not an unprimeable number, because it can be changed into a prime (680871629) by changing a digit.

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, 12708 + ... + 39028.

It is an arithmetic number, because the mean of its divisors is an integer number (51591120).

Almost surely, 2^680871628 is an apocalyptic number.

It is an amenable number.

680871628 is a deficient number, since it is larger than the sum of its proper divisors (557315252).

680871628 is a wasteful number, since it uses less digits than its factorization.

680871628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26577 (or 26575 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 680871628 is about 26093.5169726122. The cubic root of 680871628 is about 879.7414994860.

The spelling of 680871628 in words is "six hundred eighty million, eight hundred seventy-one thousand, six hundred twenty-eight".