8664009 has 16 divisors (see below), whose sum is σ = 11827200. Its totient is φ = 5640336.

The previous prime is 8663987. The next prime is 8664023. The reversal of 8664009 is 9004668.

8664009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8664009 - 2⁹ = 8663497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8664109) 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, 32812 + ... + 33074.

It is an arithmetic number, because the mean of its divisors is an integer number (739200).

Almost surely, 2^8664009 is an apocalyptic number.

It is an amenable number.

8664009 is a deficient number, since it is larger than the sum of its proper divisors (3163191).

8664009 is a wasteful number, since it uses less digits than its factorization.

8664009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 8664009 is about 2943.4688719265. The cubic root of 8664009 is about 205.3870063935.

The spelling of 8664009 in words is "eight million, six hundred sixty-four thousand, nine".