8576221 has 4 divisors (see below), whose sum is σ = 8775712. Its totient is φ = 8376732.

The previous prime is 8576219. The next prime is 8576233. The reversal of 8576221 is 1226758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8576221 - 2¹ = 8576219 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 (8576261) 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 3 ways as a sum of consecutive naturals, for example, 99681 + ... + 99766.

It is an arithmetic number, because the mean of its divisors is an integer number (2193928).

Almost surely, 2^8576221 is an apocalyptic number.

It is an amenable number.

8576221 is a deficient number, since it is larger than the sum of its proper divisors (199491).

8576221 is a wasteful number, since it uses less digits than its factorization.

8576221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199490.

The product of its digits is 6720, while the sum is 31.

The square root of 8576221 is about 2928.5185674672. The cubic root of 8576221 is about 204.6909561136.

The spelling of 8576221 in words is "eight million, five hundred seventy-six thousand, two hundred twenty-one".