623994359 has 2 divisors, whose sum is σ = 623994360. Its totient is φ = 623994358.

The previous prime is 623994337. The next prime is 623994379. The reversal of 623994359 is 953499326.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623994359 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623994379) 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, 311997179 + 311997180.

It is an arithmetic number, because the mean of its divisors is an integer number (311997180).

Almost surely, 2^623994359 is an apocalyptic number.

623994359 is a deficient number, since it is larger than the sum of its proper divisors (1).

623994359 is an equidigital number, since it uses as much as digits as its factorization.

623994359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 50.

The square root of 623994359 is about 24979.8790829740. The cubic root of 623994359 is about 854.5291613246.

The spelling of 623994359 in words is "six hundred twenty-three million, nine hundred ninety-four thousand, three hundred fifty-nine".