688830105 has 16 divisors (see below), whose sum is σ = 1150047360. Its totient is φ = 351403008.

The previous prime is 688830097. The next prime is 688830169. The reversal of 688830105 is 501038886.

It is a happy number.

688830105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 688830105 - 2³ = 688830097 is a prime.

It is a super-2 number, since 2×688830105² = 948973827108622050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997960 + ... + 998649.

It is an arithmetic number, because the mean of its divisors is an integer number (71877960).

Almost surely, 2^688830105 is an apocalyptic number.

It is an amenable number.

688830105 is a deficient number, since it is larger than the sum of its proper divisors (461217255).

688830105 is a wasteful number, since it uses less digits than its factorization.

688830105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996640.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 688830105 is about 26245.5730552792. The cubic root of 688830105 is about 883.1558970372.

The spelling of 688830105 in words is "six hundred eighty-eight million, eight hundred thirty thousand, one hundred five".