6666222 has 16 divisors (see below), whose sum is σ = 13456080. Its totient is φ = 2201472.

The previous prime is 6666203. The next prime is 6666223. The reversal of 6666222 is 2226666.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6666222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666223) 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, 4443 + ... + 5750.

It is an arithmetic number, because the mean of its divisors is an integer number (841005).

Almost surely, 2^6666222 is an apocalyptic number.

6666222 is an abundant number, since it is smaller than the sum of its proper divisors (6789858).

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

6666222 is a wasteful number, since it uses less digits than its factorization.

6666222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10307.

The product of its digits is 10368, while the sum is 30.

The square root of 6666222 is about 2581.9027867060. The cubic root of 6666222 is about 188.2030212096.

The spelling of 6666222 in words is "six million, six hundred sixty-six thousand, two hundred twenty-two".