669317716967 has 2 divisors, whose sum is σ = 669317716968. Its totient is φ = 669317716966.

The previous prime is 669317716939. The next prime is 669317716993. The reversal of 669317716967 is 769617713966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669317716967 - 2¹² = 669317712871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 669317716897 and 669317716906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669317716567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334658858483 + 334658858484.

It is an arithmetic number, because the mean of its divisors is an integer number (334658858484).

Almost surely, 2^669317716967 is an apocalyptic number.

669317716967 is a deficient number, since it is larger than the sum of its proper divisors (1).

669317716967 is an equidigital number, since it uses as much as digits as its factorization.

669317716967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108020304, while the sum is 68.

The spelling of 669317716967 in words is "six hundred sixty-nine billion, three hundred seventeen million, seven hundred sixteen thousand, nine hundred sixty-seven".