6443222 has 8 divisors (see below), whose sum is σ = 9714000. Its totient is φ = 3205224.

The previous prime is 6443167. The next prime is 6443231. The reversal of 6443222 is 2223446.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7697 + ... + 8492.

It is an arithmetic number, because the mean of its divisors is an integer number (1214250).

Almost surely, 2^6443222 is an apocalyptic number.

6443222 is a deficient number, since it is larger than the sum of its proper divisors (3270778).

6443222 is a wasteful number, since it uses less digits than its factorization.

6443222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16390.

The product of its digits is 2304, while the sum is 23.

The square root of 6443222 is about 2538.3502516398. The cubic root of 6443222 is about 186.0805717140.

Adding to 6443222 its reverse (2223446), we get a palindrome (8666668).

The spelling of 6443222 in words is "six million, four hundred forty-three thousand, two hundred twenty-two".