12636157 has 4 divisors (see below), whose sum is σ = 12696256. Its totient is φ = 12576060.

The previous prime is 12636149. The next prime is 12636163. The reversal of 12636157 is 75163621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12636157 - 2³ = 12636149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12636857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29733 + ... + 30154.

It is an arithmetic number, because the mean of its divisors is an integer number (3174064).

Almost surely, 2^12636157 is an apocalyptic number.

It is an amenable number.

12636157 is a deficient number, since it is larger than the sum of its proper divisors (60099).

12636157 is an equidigital number, since it uses as much as digits as its factorization.

12636157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60098.

The product of its digits is 7560, while the sum is 31.

The square root of 12636157 is about 3554.7372617396. The cubic root of 12636157 is about 232.9190469506.

Adding to 12636157 its reverse (75163621), we get a palindrome (87799778).

The spelling of 12636157 in words is "twelve million, six hundred thirty-six thousand, one hundred fifty-seven".