8613685 has 4 divisors (see below), whose sum is σ = 10336428. Its totient is φ = 6890944.

The previous prime is 8613677. The next prime is 8613701. The reversal of 8613685 is 5863168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2896804 + 5716881 = 1702^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 8613685 - 2³ = 8613677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 861364 + ... + 861373.

It is an arithmetic number, because the mean of its divisors is an integer number (2584107).

Almost surely, 2^8613685 is an apocalyptic number.

It is an amenable number.

8613685 is a deficient number, since it is larger than the sum of its proper divisors (1722743).

8613685 is a wasteful number, since it uses less digits than its factorization.

8613685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722742.

The product of its digits is 34560, while the sum is 37.

The square root of 8613685 is about 2934.9080053726. The cubic root of 8613685 is about 204.9885775908.

The spelling of 8613685 in words is "eight million, six hundred thirteen thousand, six hundred eighty-five".