623716617313 has 2 divisors, whose sum is σ = 623716617314. Its totient is φ = 623716617312.

The previous prime is 623716617299. The next prime is 623716617361. The reversal of 623716617313 is 313716617326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378510413824 + 245206203489 = 615232^2 + 495183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623716617313 is a prime.

It is not a weakly prime, because it can be changed into another prime (623716617383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311858308656 + 311858308657.

It is an arithmetic number, because the mean of its divisors is an integer number (311858308657).

Almost surely, 2^623716617313 is an apocalyptic number.

It is an amenable number.

623716617313 is a deficient number, since it is larger than the sum of its proper divisors (1).

623716617313 is an equidigital number, since it uses as much as digits as its factorization.

623716617313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 46.

The spelling of 623716617313 in words is "six hundred twenty-three billion, seven hundred sixteen million, six hundred seventeen thousand, three hundred thirteen".