669015724317 has 4 divisors (see below), whose sum is σ = 892020965760. Its totient is φ = 446010482876.

The previous prime is 669015724313. The next prime is 669015724319. The reversal of 669015724317 is 713427510966.

669015724317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 669015724317 - 2² = 669015724313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669015724317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669015724313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111502620717 + ... + 111502620722.

It is an arithmetic number, because the mean of its divisors is an integer number (223005241440).

Almost surely, 2^669015724317 is an apocalyptic number.

It is an amenable number.

669015724317 is a deficient number, since it is larger than the sum of its proper divisors (223005241443).

669015724317 is a wasteful number, since it uses less digits than its factorization.

669015724317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223005241442.

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 669015724317 in words is "six hundred sixty-nine billion, fifteen million, seven hundred twenty-four thousand, three hundred seventeen".