8602221 has 16 divisors (see below), whose sum is σ = 12538368. Its totient is φ = 5222400.

The previous prime is 8602219. The next prime is 8602273. The reversal of 8602221 is 1222068.

It is not a de Polignac number, because 8602221 - 2¹ = 8602219 is a prime.

It is a super-2 number, since 2×8602221² = 147996412265682, which contains 22 as substring.

8602221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8602201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140 + ... + 4301.

It is an arithmetic number, because the mean of its divisors is an integer number (783648).

Almost surely, 2^8602221 is an apocalyptic number.

It is an amenable number.

8602221 is a deficient number, since it is larger than the sum of its proper divisors (3936147).

8602221 is a wasteful number, since it uses less digits than its factorization.

8602221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8602221 is about 2932.9543126343. The cubic root of 8602221 is about 204.8975970808.

Adding to 8602221 its reverse (1222068), we get a palindrome (9824289).

It can be divided in two parts, 860 and 2221, that added together give a triangular number (3081 = T₇₈).

The spelling of 8602221 in words is "eight million, six hundred two thousand, two hundred twenty-one".