680589668 has 36 divisors (see below), whose sum is σ = 1341120396. Its totient is φ = 301804800.

The previous prime is 680589667. The next prime is 680589691. The reversal of 680589668 is 866985086.

It can be written as a sum of positive squares in 2 ways, for example, as 338265664 + 342324004 = 18392^2 + 18502^2 .

It is not an unprimeable number, because it can be changed into a prime (680589667) 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 11 ways as a sum of consecutive naturals, for example, 2696 + ... + 36992.

Almost surely, 2^680589668 is an apocalyptic number.

It is an amenable number.

680589668 is a deficient number, since it is larger than the sum of its proper divisors (660530728).

680589668 is a wasteful number, since it uses less digits than its factorization.

680589668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34364 (or 34351 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The square root of 680589668 is about 26088.1135385447. The cubic root of 680589668 is about 879.6200443043.

The spelling of 680589668 in words is "six hundred eighty million, five hundred eighty-nine thousand, six hundred sixty-eight".