8768221 has 16 divisors (see below), whose sum is σ = 11409408. Its totient is φ = 6534000.

The previous prime is 8768213. The next prime is 8768231. The reversal of 8768221 is 1228678.

It is not a de Polignac number, because 8768221 - 2³ = 8768213 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 (8768231) 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 15 ways as a sum of consecutive naturals, for example, 705 + ... + 4246.

It is an arithmetic number, because the mean of its divisors is an integer number (713088).

Almost surely, 2^8768221 is an apocalyptic number.

It is an amenable number.

8768221 is a deficient number, since it is larger than the sum of its proper divisors (2641187).

8768221 is a wasteful number, since it uses less digits than its factorization.

8768221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992.

The product of its digits is 10752, while the sum is 34.

The square root of 8768221 is about 2961.1182009504. The cubic root of 8768221 is about 206.2072018942.

The spelling of 8768221 in words is "eight million, seven hundred sixty-eight thousand, two hundred twenty-one".