22236666 has 8 divisors (see below), whose sum is σ = 44473344. Its totient is φ = 7412220.

The previous prime is 22236659. The next prime is 22236671. The reversal of 22236666 is 66663222.

It is a sphenic number, since it is the product of 3 distinct primes.

22236666 is an admirable number.

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

It is a Curzon number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853050 + ... + 1853061.

It is an arithmetic number, because the mean of its divisors is an integer number (5559168).

Almost surely, 2^22236666 is an apocalyptic number.

22236666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22236666 is a wasteful number, since it uses less digits than its factorization.

22236666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706116.

The product of its digits is 31104, while the sum is 33.

The square root of 22236666 is about 4715.5769530355. The cubic root of 22236666 is about 281.2051203450.

Adding to 22236666 its reverse (66663222), we get a palindrome (88899888).

The spelling of 22236666 in words is "twenty-two million, two hundred thirty-six thousand, six hundred sixty-six".