66330222 has 24 divisors (see below), whose sum is σ = 154319976. Its totient is φ = 18951408.

The previous prime is 66330211. The next prime is 66330239. The reversal of 66330222 is 22203366.

It is a junction number, because it is equal to n+sod(n) for n = 66330192 and 66330201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112513 + ... + 113100.

It is an arithmetic number, because the mean of its divisors is an integer number (6429999).

Almost surely, 2^66330222 is an apocalyptic number.

66330222 is an abundant number, since it is smaller than the sum of its proper divisors (87989754).

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

66330222 is a wasteful number, since it uses less digits than its factorization.

66330222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225632 (or 225625 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 66330222 is about 8144.3368054127. The cubic root of 66330222 is about 404.7968742110.

Adding to 66330222 its reverse (22203366), we get a palindrome (88533588).

The spelling of 66330222 in words is "sixty-six million, three hundred thirty thousand, two hundred twenty-two".