680431768 has 16 divisors (see below), whose sum is σ = 1278776160. Its totient is φ = 339424800.

The previous prime is 680431751. The next prime is 680431771. The reversal of 680431768 is 867134086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95223 + ... + 102118.

It is an arithmetic number, because the mean of its divisors is an integer number (79923510).

Almost surely, 2^680431768 is an apocalyptic number.

It is an amenable number.

680431768 is a deficient number, since it is larger than the sum of its proper divisors (598344392).

680431768 is a wasteful number, since it uses less digits than its factorization.

680431768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197778 (or 197774 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 680431768 is about 26085.0870805524. The cubic root of 680431768 is about 879.5520137155.

The spelling of 680431768 in words is "six hundred eighty million, four hundred thirty-one thousand, seven hundred sixty-eight".