8324326721 has 16 divisors (see below), whose sum is σ = 9069475200. Its totient is φ = 7610174208.

The previous prime is 8324326669. The next prime is 8324326723. The reversal of 8324326721 is 1276234238.

It is a cyclic number.

It is not a de Polignac number, because 8324326721 - 2¹⁸ = 8324064577 is a prime.

It is a super-2 number, since 2×8324326721² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8324326723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1588121 + ... + 1593353.

It is an arithmetic number, because the mean of its divisors is an integer number (566842200).

Almost surely, 2^8324326721 is an apocalyptic number.

It is an amenable number.

8324326721 is a deficient number, since it is larger than the sum of its proper divisors (745148479).

8324326721 is a wasteful number, since it uses less digits than its factorization.

8324326721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8168.

The product of its digits is 96768, while the sum is 38.

The square root of 8324326721 is about 91237.7483336804. The cubic root of 8324326721 is about 2026.6700014222.

The spelling of 8324326721 in words is "eight billion, three hundred twenty-four million, three hundred twenty-six thousand, seven hundred twenty-one".