8626221 has 12 divisors (see below), whose sum is σ = 12559872. Its totient is φ = 5704776.

The previous prime is 8626181. The next prime is 8626229. The reversal of 8626221 is 1226268.

It is not a de Polignac number, because 8626221 - 2⁹ = 8625709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8626229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2631 + ... + 4916.

It is an arithmetic number, because the mean of its divisors is an integer number (1046656).

Almost surely, 2^8626221 is an apocalyptic number.

It is an amenable number.

8626221 is a deficient number, since it is larger than the sum of its proper divisors (3933651).

8626221 is a wasteful number, since it uses less digits than its factorization.

8626221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680 (or 7677 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 8626221 is about 2937.0429006060. The cubic root of 8626221 is about 205.0879733464.

The spelling of 8626221 in words is "eight million, six hundred twenty-six thousand, two hundred twenty-one".