66108222 has 24 divisors (see below), whose sum is σ = 143387400. Its totient is φ = 22012560.

The previous prime is 66108209. The next prime is 66108247. The reversal of 66108222 is 22280166.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26697 + ... + 29067.

It is an arithmetic number, because the mean of its divisors is an integer number (5974475).

Almost surely, 2^66108222 is an apocalyptic number.

66108222 is an abundant number, since it is smaller than the sum of its proper divisors (77279178).

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

66108222 is a wasteful number, since it uses less digits than its factorization.

66108222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928 (or 3925 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 66108222 is about 8130.6962801472. The cubic root of 66108222 is about 404.3447658246.

Adding to 66108222 its reverse (22280166), we get a palindrome (88388388).

The spelling of 66108222 in words is "sixty-six million, one hundred eight thousand, two hundred twenty-two".