12647137 has 4 divisors (see below), whose sum is σ = 12697776. Its totient is φ = 12596500.

The previous prime is 12647113. The next prime is 12647143. The reversal of 12647137 is 73174621.

12647137 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, 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 12647137 - 2⁷ = 12647009 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12647099 and 12647108.

It is not an unprimeable number, because it can be changed into a prime (12647197) 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, 24943 + ... + 25444.

It is an arithmetic number, because the mean of its divisors is an integer number (3174444).

Almost surely, 2^12647137 is an apocalyptic number.

It is an amenable number.

12647137 is a deficient number, since it is larger than the sum of its proper divisors (50639).

12647137 is an equidigital number, since it uses as much as digits as its factorization.

12647137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50638.

The product of its digits is 7056, while the sum is 31.

The square root of 12647137 is about 3556.2813443258. The cubic root of 12647137 is about 232.9864912625.

The spelling of 12647137 in words is "twelve million, six hundred forty-seven thousand, one hundred thirty-seven".