669517367 has 2 divisors, whose sum is σ = 669517368. Its totient is φ = 669517366.

The previous prime is 669517333. The next prime is 669517369. The reversal of 669517367 is 763715966.

669517367 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669517367 - 2¹⁴ = 669500983 is a prime.

It is a super-2 number, since 2×669517367² = 896507009429225378, which contains 22 as substring.

Together with 669517369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669517369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334758683 + 334758684.

It is an arithmetic number, because the mean of its divisors is an integer number (334758684).

Almost surely, 2^669517367 is an apocalyptic number.

669517367 is a deficient number, since it is larger than the sum of its proper divisors (1).

669517367 is an equidigital number, since it uses as much as digits as its factorization.

669517367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 50.

The square root of 669517367 is about 25875.0336618139. The cubic root of 669517367 is about 874.8238522152.

The spelling of 669517367 in words is "six hundred sixty-nine million, five hundred seventeen thousand, three hundred sixty-seven".