12164645 has 4 divisors (see below), whose sum is σ = 14597580. Its totient is φ = 9731712.

The previous prime is 12164629. The next prime is 12164653. The reversal of 12164645 is 54646121.

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 4133089 + 8031556 = 2033^2 + 2834^2 .

It is a cyclic number.

It is not a de Polignac number, because 12164645 - 2⁴ = 12164629 is a prime.

It is a congruent number.

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, 1216460 + ... + 1216469.

It is an arithmetic number, because the mean of its divisors is an integer number (3649395).

Almost surely, 2^12164645 is an apocalyptic number.

It is an amenable number.

12164645 is a deficient number, since it is larger than the sum of its proper divisors (2432935).

12164645 is an equidigital number, since it uses as much as digits as its factorization.

12164645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432934.

The product of its digits is 5760, while the sum is 29.

The square root of 12164645 is about 3487.7851137936. The cubic root of 12164645 is about 229.9851597230.

The spelling of 12164645 in words is "twelve million, one hundred sixty-four thousand, six hundred forty-five".