669311017 has 8 divisors (see below), whose sum is σ = 698702400. Its totient is φ = 639943920.

The previous prime is 669310997. The next prime is 669311021. The reversal of 669311017 is 710113966.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669311017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669311057) 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, 71467 + ... + 80287.

It is an arithmetic number, because the mean of its divisors is an integer number (87337800).

Almost surely, 2^669311017 is an apocalyptic number.

It is an amenable number.

669311017 is a deficient number, since it is larger than the sum of its proper divisors (29391383).

669311017 is a wasteful number, since it uses less digits than its factorization.

669311017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 669311017 is about 25871.0459201015. The cubic root of 669311017 is about 874.7339673420.

The spelling of 669311017 in words is "six hundred sixty-nine million, three hundred eleven thousand, seventeen".