12716591 has 2 divisors, whose sum is σ = 12716592. Its totient is φ = 12716590.

The previous prime is 12716579. The next prime is 12716593. The reversal of 12716591 is 19561721.

It is a strong prime.

It is an emirp because it is prime and its reverse (19561721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12716591 is a prime.

It is a super-2 number, since 2×12716591² = 323423373322562, which contains 22 as substring.

Together with 12716593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12716593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6358295 + 6358296.

It is an arithmetic number, because the mean of its divisors is an integer number (6358296).

Almost surely, 2^12716591 is an apocalyptic number.

12716591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12716591 is an equidigital number, since it uses as much as digits as its factorization.

12716591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 12716591 is about 3566.0329499319. The cubic root of 12716591 is about 233.4122084817.

The spelling of 12716591 in words is "twelve million, seven hundred sixteen thousand, five hundred ninety-one".