8217818673 has 16 divisors (see below), whose sum is σ = 11013769536. Its totient is φ = 5450276160.

The previous prime is 8217818671. The next prime is 8217818689. The reversal of 8217818673 is 3768187128.

It is not a de Polignac number, because 8217818673 - 2¹ = 8217818671 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8217818671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490015 + ... + 506507.

It is an arithmetic number, because the mean of its divisors is an integer number (688360596).

Almost surely, 2^8217818673 is an apocalyptic number.

It is an amenable number.

8217818673 is a deficient number, since it is larger than the sum of its proper divisors (2795950863).

8217818673 is a wasteful number, since it uses less digits than its factorization.

8217818673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17344.

The product of its digits is 903168, while the sum is 51.

The square root of 8217818673 is about 90652.1851529239. The cubic root of 8217818673 is about 2017.9892641403.

The spelling of 8217818673 in words is "eight billion, two hundred seventeen million, eight hundred eighteen thousand, six hundred seventy-three".