689877924 has 24 divisors (see below), whose sum is σ = 1616401248. Its totient is φ = 229004160.

The previous prime is 689877917. The next prime is 689877941. The reversal of 689877924 is 429778986.

689877924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116382 + ... + 122165.

It is an arithmetic number, because the mean of its divisors is an integer number (67350052).

Almost surely, 2^689877924 is an apocalyptic number.

It is an amenable number.

689877924 is an abundant number, since it is smaller than the sum of its proper divisors (926523324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689877924 is a wasteful number, since it uses less digits than its factorization.

689877924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238795 (or 238793 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 60.

The square root of 689877924 is about 26265.5272933935. The cubic root of 689877924 is about 883.6034765387.

The spelling of 689877924 in words is "six hundred eighty-nine million, eight hundred seventy-seven thousand, nine hundred twenty-four".