8818321 has 8 divisors (see below), whose sum is σ = 9279144. Its totient is φ = 8369280.

The previous prime is 8818309. The next prime is 8818333. The reversal of 8818321 is 1238188.

It is an interprime number because it is at equal distance from previous prime (8818309) and next prime (8818333).

It can be written as a sum of positive squares in 4 ways, for example, as 1587600 + 7230721 = 1260^2 + 2689^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8818321 - 2⁵ = 8818289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8815321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390 + ... + 4423.

It is an arithmetic number, because the mean of its divisors is an integer number (1159893).

Almost surely, 2^8818321 is an apocalyptic number.

It is an amenable number.

8818321 is a deficient number, since it is larger than the sum of its proper divisors (460823).

8818321 is a wasteful number, since it uses less digits than its factorization.

8818321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891.

The product of its digits is 3072, while the sum is 31.

The square root of 8818321 is about 2969.5657931758. The cubic root of 8818321 is about 206.5991995638.

The spelling of 8818321 in words is "eight million, eight hundred eighteen thousand, three hundred twenty-one".