8221716066 has 8 divisors (see below), whose sum is σ = 16443432144. Its totient is φ = 2740572020.

The previous prime is 8221716049. The next prime is 8221716067. The reversal of 8221716066 is 6606171228.

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

8221716066 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (8221716067) 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 3 ways as a sum of consecutive naturals, for example, 685143000 + ... + 685143011.

It is an arithmetic number, because the mean of its divisors is an integer number (2055429018).

Almost surely, 2^8221716066 is an apocalyptic number.

8221716066 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.

8221716066 is a wasteful number, since it uses less digits than its factorization.

8221716066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370286016.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 8221716066 is about 90673.6790143645. The cubic root of 8221716066 is about 2018.3082317615.

The spelling of 8221716066 in words is "eight billion, two hundred twenty-one million, seven hundred sixteen thousand, sixty-six".