12648841 has 2 divisors, whose sum is σ = 12648842. Its totient is φ = 12648840.

The previous prime is 12648829. The next prime is 12648859. The reversal of 12648841 is 14884621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12638025 + 10816 = 3555^2 + 104^2 .

It is an emirp because it is prime and its reverse (14884621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12648841 - 2⁵ = 12648809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12648797 and 12648806.

It is not a weakly prime, because it can be changed into another prime (12640841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324420 + 6324421.

It is an arithmetic number, because the mean of its divisors is an integer number (6324421).

Almost surely, 2^12648841 is an apocalyptic number.

It is an amenable number.

12648841 is a deficient number, since it is larger than the sum of its proper divisors (1).

12648841 is an equidigital number, since it uses as much as digits as its factorization.

12648841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 34.

The square root of 12648841 is about 3556.5209123524. The cubic root of 12648841 is about 232.9969545305.

The spelling of 12648841 in words is "twelve million, six hundred forty-eight thousand, eight hundred forty-one".