6444711223 has 4 divisors (see below), whose sum is σ = 6445135240. Its totient is φ = 6444287208.

The previous prime is 6444711191. The next prime is 6444711227. The reversal of 6444711223 is 3221174446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6444711223 - 2⁵ = 6444711191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444711227) 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, 188328 + ... + 219901.

It is an arithmetic number, because the mean of its divisors is an integer number (1611283810).

Almost surely, 2^6444711223 is an apocalyptic number.

6444711223 is a deficient number, since it is larger than the sum of its proper divisors (424017).

6444711223 is a wasteful number, since it uses less digits than its factorization.

6444711223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424016.

The product of its digits is 32256, while the sum is 34.

The square root of 6444711223 is about 80278.9587812398. The cubic root of 6444711223 is about 1860.9490688771.

Adding to 6444711223 its reverse (3221174446), we get a palindrome (9665885669).

The spelling of 6444711223 in words is "six billion, four hundred forty-four million, seven hundred eleven thousand, two hundred twenty-three".