669889023 has 8 divisors (see below), whose sum is σ = 940195200. Its totient is φ = 423087768.

The previous prime is 669889019. The next prime is 669889057. The reversal of 669889023 is 320988966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 669889023 - 2² = 669889019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669889093) 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, 5876163 + ... + 5876276.

It is an arithmetic number, because the mean of its divisors is an integer number (117524400).

Almost surely, 2^669889023 is an apocalyptic number.

669889023 is a deficient number, since it is larger than the sum of its proper divisors (270306177).

669889023 is a wasteful number, since it uses less digits than its factorization.

669889023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11752461.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 669889023 is about 25882.2144145357. The cubic root of 669889023 is about 874.9856968546.

The spelling of 669889023 in words is "six hundred sixty-nine million, eight hundred eighty-nine thousand, twenty-three".