12647651 has 2 divisors, whose sum is σ = 12647652. Its totient is φ = 12647650.

The previous prime is 12647647. The next prime is 12647671. The reversal of 12647651 is 15674621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12647651 - 2² = 12647647 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (12647611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323825 + 6323826.

It is an arithmetic number, because the mean of its divisors is an integer number (6323826).

Almost surely, 2^12647651 is an apocalyptic number.

12647651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12647651 is an equidigital number, since it uses as much as digits as its factorization.

12647651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 12647651 is about 3556.3536100900. The cubic root of 12647651 is about 232.9896475350.

The spelling of 12647651 in words is "twelve million, six hundred forty-seven thousand, six hundred fifty-one".