669110992 has 80 divisors (see below), whose sum is σ = 1509635520. Its totient is φ = 284083200.

The previous prime is 669110971. The next prime is 669111019. The reversal of 669110992 is 299011966.

669110992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 242742 + ... + 245482.

It is an arithmetic number, because the mean of its divisors is an integer number (18870444).

Almost surely, 2^669110992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669110992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754817760).

669110992 is an abundant number, since it is smaller than the sum of its proper divisors (840524528).

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

669110992 is a wasteful number, since it uses less digits than its factorization.

669110992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852 (or 2846 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 669110992 is about 25867.1798230886. The cubic root of 669110992 is about 874.6468199670.

The spelling of 669110992 in words is "six hundred sixty-nine million, one hundred ten thousand, nine hundred ninety-two".