8806221 has 12 divisors (see below), whose sum is σ = 13468572. Its totient is φ = 5525376.

The previous prime is 8806211. The next prime is 8806241. The reversal of 8806221 is 1226088.

It can be written as a sum of positive squares in 2 ways, for example, as 3944196 + 4862025 = 1986^2 + 2205^2 .

It is not a de Polignac number, because 8806221 - 2⁷ = 8806093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8806211) 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 11 ways as a sum of consecutive naturals, for example, 28626 + ... + 28931.

It is an arithmetic number, because the mean of its divisors is an integer number (1122381).

Almost surely, 2^8806221 is an apocalyptic number.

It is an amenable number.

8806221 is a deficient number, since it is larger than the sum of its proper divisors (4662351).

8806221 is a wasteful number, since it uses less digits than its factorization.

8806221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57580 (or 57577 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 8806221 is about 2967.5277589266. The cubic root of 8806221 is about 206.5046617423.

The spelling of 8806221 in words is "eight million, eight hundred six thousand, two hundred twenty-one".