688704313 has 8 divisors (see below), whose sum is σ = 765490176. Its totient is φ = 614281200.

The previous prime is 688704307. The next prime is 688704329. The reversal of 688704313 is 313407886.

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

It is a cyclic number.

It is not a de Polignac number, because 688704313 - 2⁵ = 688704281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (688704353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590073 + ... + 591238.

It is an arithmetic number, because the mean of its divisors is an integer number (95686272).

Almost surely, 2^688704313 is an apocalyptic number.

It is an amenable number.

688704313 is a deficient number, since it is larger than the sum of its proper divisors (76785863).

688704313 is a wasteful number, since it uses less digits than its factorization.

688704313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181375.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 688704313 is about 26243.1765036171. The cubic root of 688704313 is about 883.1021340416.

The spelling of 688704313 in words is "six hundred eighty-eight million, seven hundred four thousand, three hundred thirteen".