680908870 has 16 divisors (see below), whose sum is σ = 1254139920. Its totient is φ = 266029344.

The previous prime is 680908819. The next prime is 680908897. The reversal of 680908870 is 78809086.

It is a self number, because there is not a number n which added to its sum of digits gives 680908870.

It is a congruent number.

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, 791325 + ... + 792184.

It is an arithmetic number, because the mean of its divisors is an integer number (78383745).

Almost surely, 2^680908870 is an apocalyptic number.

680908870 is a deficient number, since it is larger than the sum of its proper divisors (573231050).

680908870 is a wasteful number, since it uses less digits than its factorization.

680908870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583559.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 680908870 is about 26094.2305883887. The cubic root of 680908870 is about 879.7575390908.

The spelling of 680908870 in words is "six hundred eighty million, nine hundred eight thousand, eight hundred seventy".