623646133597 has 2 divisors, whose sum is σ = 623646133598. Its totient is φ = 623646133596.

The previous prime is 623646133571. The next prime is 623646133709. The reversal of 623646133597 is 795331646326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530120872836 + 93525260761 = 728094^2 + 305819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623646133597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623646131597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311823066798 + 311823066799.

It is an arithmetic number, because the mean of its divisors is an integer number (311823066799).

Almost surely, 2^623646133597 is an apocalyptic number.

It is an amenable number.

623646133597 is a deficient number, since it is larger than the sum of its proper divisors (1).

623646133597 is an equidigital number, since it uses as much as digits as its factorization.

623646133597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 55.

The spelling of 623646133597 in words is "six hundred twenty-three billion, six hundred forty-six million, one hundred thirty-three thousand, five hundred ninety-seven".