12613445 has 16 divisors (see below), whose sum is σ = 16701552. Its totient is φ = 9085440.

The previous prime is 12613409. The next prime is 12613457. The reversal of 12613445 is 54431621.

It can be written as a sum of positive squares in 8 ways, for example, as 5527201 + 7086244 = 2351^2 + 2662^2 .

It is not a de Polignac number, because 12613445 - 2²⁰ = 11564869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (1043847).

Almost surely, 2^12613445 is an apocalyptic number.

It is an amenable number.

12613445 is a deficient number, since it is larger than the sum of its proper divisors (4088107).

12613445 is a wasteful number, since it uses less digits than its factorization.

12613445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792.

The product of its digits is 2880, while the sum is 26.

The square root of 12613445 is about 3551.5412147404. The cubic root of 12613445 is about 232.7794150994.

The spelling of 12613445 in words is "twelve million, six hundred thirteen thousand, four hundred forty-five".