12636497 has 2 divisors, whose sum is σ = 12636498. Its totient is φ = 12636496.

The previous prime is 12636473. The next prime is 12636517. The reversal of 12636497 is 79463621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12609601 + 26896 = 3551^2 + 164^2 .

It is an emirp because it is prime and its reverse (79463621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12636497 - 2¹² = 12632401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12636497.

It is not a weakly prime, because it can be changed into another prime (12636097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318248 + 6318249.

It is an arithmetic number, because the mean of its divisors is an integer number (6318249).

Almost surely, 2^12636497 is an apocalyptic number.

It is an amenable number.

12636497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636497 is an equidigital number, since it uses as much as digits as its factorization.

12636497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 12636497 is about 3554.7850849243. The cubic root of 12636497 is about 232.9211359762.

The spelling of 12636497 in words is "twelve million, six hundred thirty-six thousand, four hundred ninety-seven".