12647649 has 8 divisors (see below), whose sum is σ = 19272640. Its totient is φ = 7227216.

The previous prime is 12647647. The next prime is 12647651. The reversal of 12647649 is 94674621.

It is a happy number.

12647649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12647647) and next prime (12647651).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12647649 - 2¹ = 12647647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12647647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301114 + ... + 301155.

It is an arithmetic number, because the mean of its divisors is an integer number (2409080).

Almost surely, 2^12647649 is an apocalyptic number.

It is an amenable number.

12647649 is a deficient number, since it is larger than the sum of its proper divisors (6624991).

12647649 is an equidigital number, since it uses as much as digits as its factorization.

12647649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602279.

The product of its digits is 72576, while the sum is 39.

The square root of 12647649 is about 3556.3533289031. The cubic root of 12647649 is about 232.9896352540.

The spelling of 12647649 in words is "twelve million, six hundred forty-seven thousand, six hundred forty-nine".