6669444222 has 96 divisors (see below), whose sum is σ = 17444444160. Its totient is φ = 1801154880.

The previous prime is 6669444209. The next prime is 6669444227. The reversal of 6669444222 is 2224449666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669444227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148104 + ... + 187812.

It is an arithmetic number, because the mean of its divisors is an integer number (181712960).

Almost surely, 2^6669444222 is an apocalyptic number.

6669444222 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6669444222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8722222080).

6669444222 is an abundant number, since it is smaller than the sum of its proper divisors (10774999938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6669444222 is a wasteful number, since it uses less digits than its factorization.

6669444222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39798 (or 39795 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 6669444222 is about 81666.6653047619. The cubic root of 6669444222 is about 1882.3333994350. Note that the first 4 decimals are identical.

It can be divided in two parts, 6669444 and 222, that added together give a palindrome (6669666).

The spelling of 6669444222 in words is "six billion, six hundred sixty-nine million, four hundred forty-four thousand, two hundred twenty-two".