8664219 has 16 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 5746248.

The previous prime is 8664193. The next prime is 8664223. The reversal of 8664219 is 9124668.

8664219 is a `hidden beast` number, since 8 + 6 + 642 + 1 + 9 = 666.

It is not a de Polignac number, because 8664219 - 2¹⁵ = 8631451 is a prime.

It is a super-2 number, since 2×8664219² = 150137381759922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8664259) 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, 5302 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^8664219 is an apocalyptic number.

8664219 is a deficient number, since it is larger than the sum of its proper divisors (4238181).

8664219 is a wasteful number, since it uses less digits than its factorization.

8664219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1665 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 8664219 is about 2943.5045439068. The cubic root of 8664219 is about 205.3886657840.

The spelling of 8664219 in words is "eight million, six hundred sixty-four thousand, two hundred nineteen".