12646045 has 16 divisors (see below), whose sum is σ = 16506288. Its totient is φ = 9262080.

The previous prime is 12646043. The next prime is 12646057. The reversal of 12646045 is 54064621.

It can be written as a sum of positive squares in 8 ways, for example, as 15129 + 12630916 = 123^2 + 3554^2 .

It is not a de Polignac number, because 12646045 - 2¹ = 12646043 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 (12646043) 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 15 ways as a sum of consecutive naturals, for example, 1135 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (1031643).

Almost surely, 2^12646045 is an apocalyptic number.

It is an amenable number.

12646045 is a deficient number, since it is larger than the sum of its proper divisors (3860243).

12646045 is a wasteful number, since it uses less digits than its factorization.

12646045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 12646045 is about 3556.1278098516. The cubic root of 12646045 is about 232.9797854346.

The spelling of 12646045 in words is "twelve million, six hundred forty-six thousand, forty-five".