66222822 has 32 divisors (see below), whose sum is σ = 136800000. Its totient is φ = 21355488.

The previous prime is 66222817. The next prime is 66222829. The reversal of 66222822 is 22822266.

It is a self number, because there is not a number n which added to its sum of digits gives 66222822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66222829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43429 + ... + 44927.

It is an arithmetic number, because the mean of its divisors is an integer number (4275000).

Almost surely, 2^66222822 is an apocalyptic number.

66222822 is an abundant number, since it is smaller than the sum of its proper divisors (70577178).

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

66222822 is a wasteful number, since it uses less digits than its factorization.

66222822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740.

The product of its digits is 9216, while the sum is 30.

The square root of 66222822 is about 8137.7405955216. The cubic root of 66222822 is about 404.5782776764.

The spelling of 66222822 in words is "sixty-six million, two hundred twenty-two thousand, eight hundred twenty-two".