669342959 has 8 divisors (see below), whose sum is σ = 682752000. Its totient is φ = 656061336.

The previous prime is 669342953. The next prime is 669342977. The reversal of 669342959 is 959243966.

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

It is a cyclic number.

It is not a de Polignac number, because 669342959 - 2⁴ = 669342943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669342959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669342953) 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, 21209 + ... + 42290.

It is an arithmetic number, because the mean of its divisors is an integer number (85344000).

Almost surely, 2^669342959 is an apocalyptic number.

669342959 is a deficient number, since it is larger than the sum of its proper divisors (13409041).

669342959 is a wasteful number, since it uses less digits than its factorization.

669342959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63709.

The product of its digits is 3149280, while the sum is 53.

The square root of 669342959 is about 25871.6632437886. The cubic root of 669342959 is about 874.7478823019.

The spelling of 669342959 in words is "six hundred sixty-nine million, three hundred forty-two thousand, nine hundred fifty-nine".