12638207 has 2 divisors, whose sum is σ = 12638208. Its totient is φ = 12638206.

The previous prime is 12638189. The next prime is 12638233. The reversal of 12638207 is 70283621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12638207 - 2⁸ = 12637951 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12638207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12638237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319103 + 6319104.

It is an arithmetic number, because the mean of its divisors is an integer number (6319104).

Almost surely, 2^12638207 is an apocalyptic number.

12638207 is a deficient number, since it is larger than the sum of its proper divisors (1).

12638207 is an equidigital number, since it uses as much as digits as its factorization.

12638207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12638207 is about 3555.0255976575. The cubic root of 12638207 is about 232.9316419779.

The spelling of 12638207 in words is "twelve million, six hundred thirty-eight thousand, two hundred seven".