12586997 has 2 divisors, whose sum is σ = 12586998. Its totient is φ = 12586996.

The previous prime is 12586979. The next prime is 12587009. The reversal of 12586997 is 79968521.

12586997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (12586979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9296401 + 3290596 = 3049^2 + 1814^2 .

It is an emirp because it is prime and its reverse (79968521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12586997 - 2¹⁰ = 12585973 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 (12586967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6293498 + 6293499.

It is an arithmetic number, because the mean of its divisors is an integer number (6293499).

Almost surely, 2^12586997 is an apocalyptic number.

It is an amenable number.

12586997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12586997 is an equidigital number, since it uses as much as digits as its factorization.

12586997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 12586997 is about 3547.8158069438. The cubic root of 12586997 is about 232.6166031680.

The spelling of 12586997 in words is "twelve million, five hundred eighty-six thousand, nine hundred ninety-seven".