6689431912 has 32 divisors (see below), whose sum is σ = 12906194400. Its totient is φ = 3248650944.

The previous prime is 6689431907. The next prime is 6689431919. The reversal of 6689431912 is 2191349866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6689431919) 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, 7258 + ... + 115894.

It is an arithmetic number, because the mean of its divisors is an integer number (403318575).

Almost surely, 2^6689431912 is an apocalyptic number.

It is an amenable number.

6689431912 is a deficient number, since it is larger than the sum of its proper divisors (6216762488).

6689431912 is a wasteful number, since it uses less digits than its factorization.

6689431912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108865 (or 108861 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 6689431912 is about 81788.9473706564. The cubic root of 6689431912 is about 1884.2119154944.

The spelling of 6689431912 in words is "six billion, six hundred eighty-nine million, four hundred thirty-one thousand, nine hundred twelve".