8669658321 has 27 divisors (see below), whose sum is σ = 12852702993. Its totient is φ = 5631353280.

The previous prime is 8669658269. The next prime is 8669658331. The reversal of 8669658321 is 1238569668.

It is a happy number.

The square root of 8669658321 is 93111.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1607609025 + 7062049296 = 40095^2 + 84036^2 .

It is not a de Polignac number, because 8669658321 - 2¹¹ = 8669656273 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8669658331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11452275 + ... + 11453031.

Almost surely, 2^8669658321 is an apocalyptic number.

8669658321 is the 93111-st square number.

8669658321 is the 46556-th centered octagonal number.

It is an amenable number.

8669658321 is a deficient number, since it is larger than the sum of its proper divisors (4183044672).

8669658321 is an frugal number, since it uses more digits than its factorization.

8669658321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 801 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The cubic root of 8669658321 is about 2054.3163719627.

The spelling of 8669658321 in words is "eight billion, six hundred sixty-nine million, six hundred fifty-eight thousand, three hundred twenty-one".