8672228321 has 4 divisors (see below), whose sum is σ = 8674757892. Its totient is φ = 8669698752.

The previous prime is 8672228317. The next prime is 8672228329. The reversal of 8672228321 is 1238222768.

It is a happy number.

8672228321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5031916096 + 3640312225 = 70936^2 + 60335^2 .

It is a cyclic number.

It is not a de Polignac number, because 8672228321 - 2² = 8672228317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8672228329) 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, 1259636 + ... + 1266501.

It is an arithmetic number, because the mean of its divisors is an integer number (2168689473).

Almost surely, 2^8672228321 is an apocalyptic number.

It is an amenable number.

8672228321 is a deficient number, since it is larger than the sum of its proper divisors (2529571).

8672228321 is a wasteful number, since it uses less digits than its factorization.

8672228321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529570.

The product of its digits is 129024, while the sum is 41.

The square root of 8672228321 is about 93124.7997098517. The cubic root of 8672228321 is about 2054.5193431095.

The spelling of 8672228321 in words is "eight billion, six hundred seventy-two million, two hundred twenty-eight thousand, three hundred twenty-one".