12368591 has 2 divisors, whose sum is σ = 12368592. Its totient is φ = 12368590.

The previous prime is 12368581. The next prime is 12368599. The reversal of 12368591 is 19586321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12368591 is a 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 (12368599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6184295 + 6184296.

It is an arithmetic number, because the mean of its divisors is an integer number (6184296).

Almost surely, 2^12368591 is an apocalyptic number.

12368591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12368591 is an equidigital number, since it uses as much as digits as its factorization.

12368591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 12368591 is about 3516.9007662998. The cubic root of 12368591 is about 231.2633129906.

The spelling of 12368591 in words is "twelve million, three hundred sixty-eight thousand, five hundred ninety-one".