12645499 has 2 divisors, whose sum is σ = 12645500. Its totient is φ = 12645498.

The previous prime is 12645497. The next prime is 12645509. The reversal of 12645499 is 99454621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12645499 - 2¹ = 12645497 is a prime.

Together with 12645497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12645497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6322749 + 6322750.

It is an arithmetic number, because the mean of its divisors is an integer number (6322750).

Almost surely, 2^12645499 is an apocalyptic number.

12645499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12645499 is an equidigital number, since it uses as much as digits as its factorization.

12645499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 12645499 is about 3556.0510401286. The cubic root of 12645499 is about 232.9764323759.

The spelling of 12645499 in words is "twelve million, six hundred forty-five thousand, four hundred ninety-nine".