8685909 has 6 divisors (see below), whose sum is σ = 12546326. Its totient is φ = 5790600.

The previous prime is 8685893. The next prime is 8685913. The reversal of 8685909 is 9095868.

It can be written as a sum of positive squares in only one way, i.e., 5391684 + 3294225 = 2322^2 + 1815^2 .

It is not a de Polignac number, because 8685909 - 2⁴ = 8685893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8685949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 482542 + ... + 482559.

Almost surely, 2^8685909 is an apocalyptic number.

It is an amenable number.

8685909 is a deficient number, since it is larger than the sum of its proper divisors (3860417).

8685909 is a wasteful number, since it uses less digits than its factorization.

8685909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965107 (or 965104 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 8685909 is about 2947.1866245625. The cubic root of 8685909 is about 205.5599129125.

The spelling of 8685909 in words is "eight million, six hundred eighty-five thousand, nine hundred nine".