8685681 has 8 divisors (see below), whose sum is σ = 11693760. Its totient is φ = 5734032.

The previous prime is 8685667. The next prime is 8685683. The reversal of 8685681 is 1865868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8685681 - 2¹⁰ = 8684657 is a prime.

It is a super-2 number, since 2×8685681² = 150882108867522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8685683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13746 + ... + 14363.

It is an arithmetic number, because the mean of its divisors is an integer number (1461720).

Almost surely, 2^8685681 is an apocalyptic number.

It is an amenable number.

8685681 is a deficient number, since it is larger than the sum of its proper divisors (3008079).

8685681 is a wasteful number, since it uses less digits than its factorization.

8685681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28215.

The product of its digits is 92160, while the sum is 42.

The square root of 8685681 is about 2947.1479433513. The cubic root of 8685681 is about 205.5581142879.

The spelling of 8685681 in words is "eight million, six hundred eighty-five thousand, six hundred eighty-one".