12636823 has 2 divisors, whose sum is σ = 12636824. Its totient is φ = 12636822.

The previous prime is 12636791. The next prime is 12636847. The reversal of 12636823 is 32863621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12636823 - 2⁵ = 12636791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12636853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318411 + 6318412.

It is an arithmetic number, because the mean of its divisors is an integer number (6318412).

Almost surely, 2^12636823 is an apocalyptic number.

12636823 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636823 is an equidigital number, since it uses as much as digits as its factorization.

12636823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 12636823 is about 3554.8309383148. The cubic root of 12636823 is about 232.9231389479.

The spelling of 12636823 in words is "twelve million, six hundred thirty-six thousand, eight hundred twenty-three".