11644513 has 4 divisors (see below), whose sum is σ = 11652100. Its totient is φ = 11636928.

The previous prime is 11644483. The next prime is 11644517. The reversal of 11644513 is 31544611.

11644513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31544611 = 7 ⋅4506373.

It can be written as a sum of positive squares in 2 ways, for example, as 833569 + 10810944 = 913^2 + 3288^2 .

It is a cyclic number.

It is not a de Polignac number, because 11644513 - 2⁹ = 11644001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11644517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588 + ... + 4861.

It is an arithmetic number, because the mean of its divisors is an integer number (2913025).

Almost surely, 2^11644513 is an apocalyptic number.

It is an amenable number.

11644513 is a deficient number, since it is larger than the sum of its proper divisors (7587).

11644513 is an equidigital number, since it uses as much as digits as its factorization.

11644513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7586.

The product of its digits is 1440, while the sum is 25.

The square root of 11644513 is about 3412.4057496142. The cubic root of 11644513 is about 226.6594218657.

The spelling of 11644513 in words is "eleven million, six hundred forty-four thousand, five hundred thirteen".