6644113 has 4 divisors (see below), whose sum is σ = 7593280. Its totient is φ = 5694948.

The previous prime is 6644111. The next prime is 6644123. The reversal of 6644113 is 3114466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6644113 - 2¹ = 6644111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6644111) 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, 474573 + ... + 474586.

It is an arithmetic number, because the mean of its divisors is an integer number (1898320).

Almost surely, 2^6644113 is an apocalyptic number.

It is an amenable number.

6644113 is a deficient number, since it is larger than the sum of its proper divisors (949167).

6644113 is an equidigital number, since it uses as much as digits as its factorization.

6644113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949166.

The product of its digits is 1728, while the sum is 25.

The square root of 6644113 is about 2577.6176985736. The cubic root of 6644113 is about 187.9947278588.

Adding to 6644113 its reverse (3114466), we get a palindrome (9758579).

The spelling of 6644113 in words is "six million, six hundred forty-four thousand, one hundred thirteen".