680796658 has 8 divisors (see below), whose sum is σ = 1021548528. Its totient is φ = 340280484.

The previous prime is 680796629. The next prime is 680796667. The reversal of 680796658 is 856697086.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 680796599 and 680796608.

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, 51516 + ... + 63367.

It is an arithmetic number, because the mean of its divisors is an integer number (127693566).

Almost surely, 2^680796658 is an apocalyptic number.

680796658 is a deficient number, since it is larger than the sum of its proper divisors (340751870).

680796658 is a wasteful number, since it uses less digits than its factorization.

680796658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117848.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 680796658 is about 26092.0803693381. The cubic root of 680796658 is about 879.7092091891.

The spelling of 680796658 in words is "six hundred eighty million, seven hundred ninety-six thousand, six hundred fifty-eight".