669231880 has 32 divisors (see below), whose sum is σ = 1526405400. Its totient is φ = 264024576.

The previous prime is 669231863. The next prime is 669231887. The reversal of 669231880 is 88132966.

669231880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 316768804 + 352463076 = 17798^2 + 18774^2 .

It is not an unprimeable number, because it can be changed into a prime (669231887) 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, 111675 + ... + 117514.

Almost surely, 2^669231880 is an apocalyptic number.

It is an amenable number.

669231880 is an abundant number, since it is smaller than the sum of its proper divisors (857173520).

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

669231880 is a wasteful number, since it uses less digits than its factorization.

669231880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229273 (or 229269 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 669231880 is about 25869.5164237757. The cubic root of 669231880 is about 874.6994908188.

The spelling of 669231880 in words is "six hundred sixty-nine million, two hundred thirty-one thousand, eight hundred eighty".