8604205009 has 2 divisors, whose sum is σ = 8604205010. Its totient is φ = 8604205008.

The previous prime is 8604205007. The next prime is 8604205037. The reversal of 8604205009 is 9005024068.

It is a happy number.

8604205009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4723537984 + 3880667025 = 68728^2 + 62295^2 .

It is a cyclic number.

It is not a de Polignac number, because 8604205009 - 2¹ = 8604205007 is a prime.

Together with 8604205007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8604205003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4302102504 + 4302102505.

It is an arithmetic number, because the mean of its divisors is an integer number (4302102505).

Almost surely, 2^8604205009 is an apocalyptic number.

It is an amenable number.

8604205009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8604205009 is an equidigital number, since it uses as much as digits as its factorization.

8604205009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 8604205009 is about 92758.8540733444. The cubic root of 8604205009 is about 2049.1334833961.

The spelling of 8604205009 in words is "eight billion, six hundred four million, two hundred five thousand, nine".