669595923 has 16 divisors (see below), whose sum is σ = 1006802560. Its totient is φ = 439733448.

The previous prime is 669595921. The next prime is 669595933. The reversal of 669595923 is 329595966.

It is not a de Polignac number, because 669595923 - 2¹ = 669595921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669595923.

It is not an unprimeable number, because it can be changed into a prime (669595921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183265 + ... + 186882.

It is an arithmetic number, because the mean of its divisors is an integer number (62925160).

Almost surely, 2^669595923 is an apocalyptic number.

669595923 is a deficient number, since it is larger than the sum of its proper divisors (337206637).

669595923 is a wasteful number, since it uses less digits than its factorization.

669595923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370223 (or 370217 counting only the distinct ones).

The product of its digits is 3936600, while the sum is 54.

The square root of 669595923 is about 25876.5516056526. The cubic root of 669595923 is about 874.8580659032.

The spelling of 669595923 in words is "six hundred sixty-nine million, five hundred ninety-five thousand, nine hundred twenty-three".