222265636 has 6 divisors (see below), whose sum is σ = 388964870. Its totient is φ = 111132816.

The previous prime is 222265619. The next prime is 222265699. The reversal of 222265636 is 636562222.

It can be written as a sum of positive squares in only one way, i.e., 221712100 + 553536 = 14890^2 + 744^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27783201 + ... + 27783208.

Almost surely, 2^222265636 is an apocalyptic number.

It is an amenable number.

222265636 is a deficient number, since it is larger than the sum of its proper divisors (166699234).

222265636 is a wasteful number, since it uses less digits than its factorization.

222265636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55566413 (or 55566411 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 222265636 is about 14908.5759212609. The cubic root of 222265636 is about 605.7463057438.

The spelling of 222265636 in words is "two hundred twenty-two million, two hundred sixty-five thousand, six hundred thirty-six".