12946645 has 8 divisors (see below), whose sum is σ = 15604056. Its totient is φ = 10311936.

The previous prime is 12946621. The next prime is 12946649. The reversal of 12946645 is 54664921.

12946645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 492804 + 12453841 = 702^2 + 3529^2 .

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 12946645 - 2⁷ = 12946517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12946649) 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, 4392 + ... + 6721.

It is an arithmetic number, because the mean of its divisors is an integer number (1950507).

Almost surely, 2^12946645 is an apocalyptic number.

It is an amenable number.

12946645 is a deficient number, since it is larger than the sum of its proper divisors (2657411).

12946645 is a wasteful number, since it uses less digits than its factorization.

12946645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351.

The product of its digits is 51840, while the sum is 37.

The square root of 12946645 is about 3598.1446607939. The cubic root of 12946645 is about 234.8113470095.

The spelling of 12946645 in words is "twelve million, nine hundred forty-six thousand, six hundred forty-five".