8639968 has 24 divisors (see below), whose sum is σ = 17220168. Its totient is φ = 4266624.

The previous prime is 8639951. The next prime is 8639977. The reversal of 8639968 is 8699368.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030 + ... + 4282.

It is an arithmetic number, because the mean of its divisors is an integer number (717507).

Almost surely, 2^8639968 is an apocalyptic number.

It is an amenable number.

8639968 is a deficient number, since it is larger than the sum of its proper divisors (8580200).

8639968 is a wasteful number, since it uses less digits than its factorization.

8639968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346 (or 3338 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 8639968 is about 2939.3822480242. The cubic root of 8639968 is about 205.1968602711.

The spelling of 8639968 in words is "eight million, six hundred thirty-nine thousand, nine hundred sixty-eight".