623994719 has 2 divisors, whose sum is σ = 623994720. Its totient is φ = 623994718.

The previous prime is 623994689. The next prime is 623994733. The reversal of 623994719 is 917499326.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623994719 - 2²⁸ = 355559263 is a prime.

It is a super-2 number, since 2×623994719² = 778738818679777922, 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 (623994619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311997359 + 311997360.

It is an arithmetic number, because the mean of its divisors is an integer number (311997360).

Almost surely, 2^623994719 is an apocalyptic number.

623994719 is a deficient number, since it is larger than the sum of its proper divisors (1).

623994719 is an equidigital number, since it uses as much as digits as its factorization.

623994719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 623994719 is about 24979.8862887724. The cubic root of 623994719 is about 854.5293256586.

The spelling of 623994719 in words is "six hundred twenty-three million, nine hundred ninety-four thousand, seven hundred nineteen".