12956649 has 8 divisors (see below), whose sum is σ = 17871360. Its totient is φ = 8339856.

The previous prime is 12956641. The next prime is 12956663. The reversal of 12956649 is 94665921.

It is a happy number.

12956649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12956649 - 2³ = 12956641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12956649.

It is not an unprimeable number, because it can be changed into a prime (12956641) 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, 74377 + ... + 74550.

It is an arithmetic number, because the mean of its divisors is an integer number (2233920).

Almost surely, 2^12956649 is an apocalyptic number.

It is an amenable number.

12956649 is a deficient number, since it is larger than the sum of its proper divisors (4914711).

12956649 is a wasteful number, since it uses less digits than its factorization.

12956649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148959.

The product of its digits is 116640, while the sum is 42.

The square root of 12956649 is about 3599.5345532443. The cubic root of 12956649 is about 234.8718117845.

The spelling of 12956649 in words is "twelve million, nine hundred fifty-six thousand, six hundred forty-nine".