6222222 has 12 divisors (see below), whose sum is σ = 13481520. Its totient is φ = 2074068.

The previous prime is 6222217. The next prime is 6222233. The reversal of 6222222 is 2222226.

6222222 is a `hidden beast` number, since 622 + 22 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 345679 = 6222222 / (6 + 2 + 2 + 2 + 2 + 2 + 2).

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

6222222 is a modest number, since divided by 2222 gives 622 as remainder.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6222195 and 6222204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172822 + ... + 172857.

It is an arithmetic number, because the mean of its divisors is an integer number (1123460).

Almost surely, 2^6222222 is an apocalyptic number.

6222222 is an abundant number, since it is smaller than the sum of its proper divisors (7259298).

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

6222222 is a wasteful number, since it uses less digits than its factorization.

6222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345687 (or 345684 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 6222222 is about 2494.4382133058. The cubic root of 6222222 is about 183.9282762358.

Adding to 6222222 its reverse (2222226), we get a palindrome (8444448).

The spelling of 6222222 in words is "six million, two hundred twenty-two thousand, two hundred twenty-two".