12647227 has 4 divisors (see below), whose sum is σ = 12696696. Its totient is φ = 12597760.

The previous prime is 12647221. The next prime is 12647233. The reversal of 12647227 is 72274621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72274621 = 991 ⋅72931.

It is an interprime number because it is at equal distance from previous prime (12647221) and next prime (12647233).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12647227 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 not an unprimeable number, because it can be changed into a prime (12647221) 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, 24349 + ... + 24862.

It is an arithmetic number, because the mean of its divisors is an integer number (3174174).

Almost surely, 2^12647227 is an apocalyptic number.

12647227 is a deficient number, since it is larger than the sum of its proper divisors (49469).

12647227 is an equidigital number, since it uses as much as digits as its factorization.

12647227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49468.

The product of its digits is 9408, while the sum is 31.

The square root of 12647227 is about 3556.2939979704. The cubic root of 12647227 is about 232.9870439234.

The spelling of 12647227 in words is "twelve million, six hundred forty-seven thousand, two hundred twenty-seven".