12715397 has 2 divisors, whose sum is σ = 12715398. Its totient is φ = 12715396.

The previous prime is 12715387. The next prime is 12715403. The reversal of 12715397 is 79351721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11621281 + 1094116 = 3409^2 + 1046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12715397 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 (12715387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6357698 + 6357699.

It is an arithmetic number, because the mean of its divisors is an integer number (6357699).

Almost surely, 2^12715397 is an apocalyptic number.

It is an amenable number.

12715397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12715397 is an equidigital number, since it uses as much as digits as its factorization.

12715397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 12715397 is about 3565.8655330789. The cubic root of 12715397 is about 233.4049029887.

The spelling of 12715397 in words is "twelve million, seven hundred fifteen thousand, three hundred ninety-seven".