6642222 has 16 divisors (see below), whose sum is σ = 13353600. Its totient is φ = 2202552.

The previous prime is 6642211. The next prime is 6642281. The reversal of 6642222 is 2222466.

It is a super-2 number, since 2×6642222² = 88238226194568, which contains 22 as substring.

6642222 is a modest number, since divided by 2222 gives 664 as remainder.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6642192 and 6642201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588 + ... + 3975.

It is an arithmetic number, because the mean of its divisors is an integer number (834600).

Almost surely, 2^6642222 is an apocalyptic number.

6642222 is an abundant number, since it is smaller than the sum of its proper divisors (6711378).

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

6642222 is a wasteful number, since it uses less digits than its factorization.

6642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767.

The product of its digits is 2304, while the sum is 24.

The square root of 6642222 is about 2577.2508608981. The cubic root of 6642222 is about 187.9768909275.

Adding to 6642222 its reverse (2222466), we get a palindrome (8864688).

The spelling of 6642222 in words is "six million, six hundred forty-two thousand, two hundred twenty-two".