6644229 has 8 divisors (see below), whose sum is σ = 9380160. Its totient is φ = 4168896.

The previous prime is 6644227. The next prime is 6644269. The reversal of 6644229 is 9224466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6644229 - 2¹ = 6644227 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6644229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65089 + ... + 65190.

It is an arithmetic number, because the mean of its divisors is an integer number (1172520).

Almost surely, 2^6644229 is an apocalyptic number.

It is an amenable number.

6644229 is a deficient number, since it is larger than the sum of its proper divisors (2735931).

6644229 is a wasteful number, since it uses less digits than its factorization.

6644229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130299.

The product of its digits is 20736, while the sum is 33.

The square root of 6644229 is about 2577.6401998727. The cubic root of 6644229 is about 187.9958219231.

The spelling of 6644229 in words is "six million, six hundred forty-four thousand, two hundred twenty-nine".