680687356 has 12 divisors (see below), whose sum is σ = 1191539160. Its totient is φ = 340247600.

The previous prime is 680687341. The next prime is 680687363. The reversal of 680687356 is 653786086.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6691 + ... + 37498.

It is an arithmetic number, because the mean of its divisors is an integer number (99294930).

Almost surely, 2^680687356 is an apocalyptic number.

It is an amenable number.

680687356 is a deficient number, since it is larger than the sum of its proper divisors (510851804).

680687356 is a wasteful number, since it uses less digits than its factorization.

680687356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48044 (or 48042 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 680687356 is about 26089.9857416596. The cubic root of 680687356 is about 879.6621275232.

The spelling of 680687356 in words is "six hundred eighty million, six hundred eighty-seven thousand, three hundred fifty-six".