7865222 has 12 divisors (see below), whose sum is σ = 11943036. Its totient is φ = 3884760.

The previous prime is 7865171. The next prime is 7865257. The reversal of 7865222 is 2225687.

7865222 is nontrivially palindromic in base 12.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁸ + 8 + 6 + 5⁵ + 2 + 2⁷ + 2²¹ .

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, 23597 + ... + 23927.

It is an arithmetic number, because the mean of its divisors is an integer number (995253).

Almost surely, 2^7865222 is an apocalyptic number.

7865222 is a deficient number, since it is larger than the sum of its proper divisors (4077814).

7865222 is a wasteful number, since it uses less digits than its factorization.

7865222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 442 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 7865222 is about 2804.5003119986. The cubic root of 7865222 is about 198.8704829651.

The spelling of 7865222 in words is "seven million, eight hundred sixty-five thousand, two hundred twenty-two".