680718268 has 24 divisors (see below), whose sum is σ = 1202443424. Its totient is φ = 337176000.

The previous prime is 680718253. The next prime is 680718277. The reversal of 680718268 is 862817086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252946 + ... + 255622.

Almost surely, 2^680718268 is an apocalyptic number.

It is an amenable number.

680718268 is a deficient number, since it is larger than the sum of its proper divisors (521725156).

680718268 is a wasteful number, since it uses less digits than its factorization.

680718268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253 (or 3251 counting only the distinct ones).

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

The square root of 680718268 is about 26090.5781461431. The cubic root of 680718268 is about 879.6754433301.

The spelling of 680718268 in words is "six hundred eighty million, seven hundred eighteen thousand, two hundred sixty-eight".