12945647 has 8 divisors (see below), whose sum is σ = 15209040. Its totient is φ = 10863360.

The previous prime is 12945641. The next prime is 12945659. The reversal of 12945647 is 74654921.

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

It is a cyclic number.

It is not a de Polignac number, because 12945647 - 2⁸ = 12945391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12945647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945641) 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 in 7 ways as a sum of consecutive naturals, for example, 45122 + ... + 45407.

It is an arithmetic number, because the mean of its divisors is an integer number (1901130).

Almost surely, 2^12945647 is an apocalyptic number.

12945647 is a deficient number, since it is larger than the sum of its proper divisors (2263393).

12945647 is a wasteful number, since it uses less digits than its factorization.

12945647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90553.

The product of its digits is 60480, while the sum is 38.

The square root of 12945647 is about 3598.0059755370. The cubic root of 12945647 is about 234.8053133293.

The spelling of 12945647 in words is "twelve million, nine hundred forty-five thousand, six hundred forty-seven".