8685644 has 24 divisors (see below), whose sum is σ = 16661568. Its totient is φ = 3929040.

The previous prime is 8685637. The next prime is 8685653. The reversal of 8685644 is 4465868.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13187 + ... + 13829.

It is an arithmetic number, because the mean of its divisors is an integer number (694232).

Almost surely, 2^8685644 is an apocalyptic number.

It is an amenable number.

8685644 is a deficient number, since it is larger than the sum of its proper divisors (7975924).

8685644 is a wasteful number, since it uses less digits than its factorization.

8685644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 963 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 8685644 is about 2947.1416660894. The cubic root of 8685644 is about 205.5578224028.

The spelling of 8685644 in words is "eight million, six hundred eighty-five thousand, six hundred forty-four".