12634147 has 2 divisors, whose sum is σ = 12634148. Its totient is φ = 12634146.

The previous prime is 12634133. The next prime is 12634151. The reversal of 12634147 is 74143621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12634147 is a prime.

It is not a weakly prime, because it can be changed into another prime (12634187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6317073 + 6317074.

It is an arithmetic number, because the mean of its divisors is an integer number (6317074).

Almost surely, 2^12634147 is an apocalyptic number.

12634147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12634147 is an equidigital number, since it uses as much as digits as its factorization.

12634147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 12634147 is about 3554.4545291788. The cubic root of 12634147 is about 232.9066963573.

Adding to 12634147 its reverse (74143621), we get a palindrome (86777768).

The spelling of 12634147 in words is "twelve million, six hundred thirty-four thousand, one hundred forty-seven".