222633666 has 24 divisors (see below), whose sum is σ = 510748524. Its totient is φ = 69845760.

The previous prime is 222633623. The next prime is 222633673. The reversal of 222633666 is 666336222.

It can be written as a sum of positive squares in 2 ways, for example, as 221861025 + 772641 = 14895^2 + 879^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 222633666.

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 in 11 ways as a sum of consecutive naturals, for example, 363475 + ... + 364086.

Almost surely, 2^222633666 is an apocalyptic number.

222633666 is an abundant number, since it is smaller than the sum of its proper divisors (288114858).

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

222633666 is a wasteful number, since it uses less digits than its factorization.

222633666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727586 (or 727583 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 222633666 is about 14920.9137119682. The cubic root of 222633666 is about 606.0804552853.

Adding to 222633666 its reverse (666336222), we get a palindrome (888969888).

The spelling of 222633666 in words is "two hundred twenty-two million, six hundred thirty-three thousand, six hundred sixty-six".