22170066 has 8 divisors (see below), whose sum is σ = 44340144. Its totient is φ = 7390020.

The previous prime is 22170061. The next prime is 22170073. The reversal of 22170066 is 66007122.

It is a happy number.

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

22170066 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22170061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847500 + ... + 1847511.

It is an arithmetic number, because the mean of its divisors is an integer number (5542518).

Almost surely, 2^22170066 is an apocalyptic number.

22170066 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.

22170066 is a wasteful number, since it uses less digits than its factorization.

22170066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695016.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 22170066 is about 4708.5099553893. The cubic root of 22170066 is about 280.9240981575.

Adding to 22170066 its reverse (66007122), we get a palindrome (88177188).

The spelling of 22170066 in words is "twenty-two million, one hundred seventy thousand, sixty-six".