12667841 has 2 divisors, whose sum is σ = 12667842. Its totient is φ = 12667840.

The previous prime is 12667829. The next prime is 12667847. The reversal of 12667841 is 14876621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12397441 + 270400 = 3521^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12667841 - 2⁶ = 12667777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12667847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333920 + 6333921.

It is an arithmetic number, because the mean of its divisors is an integer number (6333921).

Almost surely, 2^12667841 is an apocalyptic number.

It is an amenable number.

12667841 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667841 is an equidigital number, since it uses as much as digits as its factorization.

12667841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 12667841 is about 3559.1910597775. The cubic root of 12667841 is about 233.1135588210.

The spelling of 12667841 in words is "twelve million, six hundred sixty-seven thousand, eight hundred forty-one".