5644813 has 2 divisors, whose sum is σ = 5644814. Its totient is φ = 5644812.

The previous prime is 5644801. The next prime is 5644829. The reversal of 5644813 is 3184465.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4052169 + 1592644 = 2013^2 + 1262^2 .

It is a cyclic number.

It is not a de Polignac number, because 5644813 - 2⁵ = 5644781 is a prime.

5644813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5644213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822406 + 2822407.

It is an arithmetic number, because the mean of its divisors is an integer number (2822407).

Almost surely, 2^5644813 is an apocalyptic number.

It is an amenable number.

5644813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644813 is an equidigital number, since it uses as much as digits as its factorization.

5644813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 5644813 is about 2375.8815206150. The cubic root of 5644813 is about 178.0532286209.

The spelling of 5644813 in words is "five million, six hundred forty-four thousand, eight hundred thirteen".