8108609 has 4 divisors (see below), whose sum is σ = 8585604. Its totient is φ = 7631616.

The previous prime is 8108593. The next prime is 8108641. The reversal of 8108609 is 9068018.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9068018 = 2 ⋅4534009.

It can be written as a sum of positive squares in 2 ways, for example, as 2795584 + 5313025 = 1672^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 8108609 - 2⁴ = 8108593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8108689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238472 + ... + 238505.

It is an arithmetic number, because the mean of its divisors is an integer number (2146401).

Almost surely, 2^8108609 is an apocalyptic number.

It is an amenable number.

8108609 is a deficient number, since it is larger than the sum of its proper divisors (476995).

8108609 is a wasteful number, since it uses less digits than its factorization.

8108609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476994.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 8108609 is about 2847.5619396248. The cubic root of 8108609 is about 200.9010098111.

The spelling of 8108609 in words is "eight million, one hundred eight thousand, six hundred nine".