669000719 has 2 divisors, whose sum is σ = 669000720. Its totient is φ = 669000718.

The previous prime is 669000653. The next prime is 669000763. The reversal of 669000719 is 917000966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669000719 - 2⁸ = 669000463 is a prime.

It is a super-2 number, since 2×669000719² = 895123924045033922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669000769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334500359 + 334500360.

It is an arithmetic number, because the mean of its divisors is an integer number (334500360).

Almost surely, 2^669000719 is an apocalyptic number.

669000719 is a deficient number, since it is larger than the sum of its proper divisors (1).

669000719 is an equidigital number, since it uses as much as digits as its factorization.

669000719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 669000719 is about 25865.0482118244. The cubic root of 669000719 is about 874.5987685331.

The spelling of 669000719 in words is "six hundred sixty-nine million, seven hundred nineteen", and thus it is an aban number.