688960678 has 48 divisors (see below), whose sum is σ = 1247419008. Its totient is φ = 284256000.

The previous prime is 688960669. The next prime is 688960681. The reversal of 688960678 is 876069886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 731688 + ... + 732628.

It is an arithmetic number, because the mean of its divisors is an integer number (25987896).

Almost surely, 2^688960678 is an apocalyptic number.

688960678 is a deficient number, since it is larger than the sum of its proper divisors (558458330).

688960678 is a wasteful number, since it uses less digits than its factorization.

688960678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 58.

The square root of 688960678 is about 26248.0604616798. The cubic root of 688960678 is about 883.2116964903.

The spelling of 688960678 in words is "six hundred eighty-eight million, nine hundred sixty thousand, six hundred seventy-eight".