12645799 has 6 divisors (see below), whose sum is σ = 13067880. Its totient is φ = 12236940.

The previous prime is 12645757. The next prime is 12645821. The reversal of 12645799 is 99754621.

It is a happy number.

It is not a de Polignac number, because 12645799 - 2⁹ = 12645287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645709) 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 in 5 ways as a sum of consecutive naturals, for example, 5619 + ... + 7540.

It is an arithmetic number, because the mean of its divisors is an integer number (2177980).

Almost surely, 2^12645799 is an apocalyptic number.

12645799 is a deficient number, since it is larger than the sum of its proper divisors (422081).

12645799 is an equidigital number, since it uses as much as digits as its factorization.

12645799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13221 (or 13190 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 12645799 is about 3556.0932215002. The cubic root of 12645799 is about 232.9782747278.

The spelling of 12645799 in words is "twelve million, six hundred forty-five thousand, seven hundred ninety-nine".