12136647 has 4 divisors (see below), whose sum is σ = 16182200. Its totient is φ = 8091096.

The previous prime is 12136643. The next prime is 12136651. The reversal of 12136647 is 74663121.

12136647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12136643) and next prime (12136651).

It is not a de Polignac number, because 12136647 - 2² = 12136643 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 (12136643) 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, 2022772 + ... + 2022777.

It is an arithmetic number, because the mean of its divisors is an integer number (4045550).

Almost surely, 2^12136647 is an apocalyptic number.

12136647 is a deficient number, since it is larger than the sum of its proper divisors (4045553).

12136647 is an equidigital number, since it uses as much as digits as its factorization.

12136647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045552.

The product of its digits is 6048, while the sum is 30.

The square root of 12136647 is about 3483.7690796033. The cubic root of 12136647 is about 229.8085804942.

Adding to 12136647 its reverse (74663121), we get a palindrome (86799768).

The spelling of 12136647 in words is "twelve million, one hundred thirty-six thousand, six hundred forty-seven".