12646345 has 4 divisors (see below), whose sum is σ = 15175620. Its totient is φ = 10117072.

The previous prime is 12646331. The next prime is 12646363. The reversal of 12646345 is 54364621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6431296 + 6215049 = 2536^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 12646345 - 2⁵ = 12646313 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1264630 + ... + 1264639.

It is an arithmetic number, because the mean of its divisors is an integer number (3793905).

Almost surely, 2^12646345 is an apocalyptic number.

It is an amenable number.

12646345 is a deficient number, since it is larger than the sum of its proper divisors (2529275).

12646345 is an equidigital number, since it uses as much as digits as its factorization.

12646345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529274.

The product of its digits is 17280, while the sum is 31.

The square root of 12646345 is about 3556.1699903126. The cubic root of 12646345 is about 232.9816277335.

The spelling of 12646345 in words is "twelve million, six hundred forty-six thousand, three hundred forty-five".