8638816 has 24 divisors (see below), whose sum is σ = 17179344. Its totient is φ = 4275840.

The previous prime is 8638807. The next prime is 8638843. The reversal of 8638816 is 6188368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1986 + ... + 4606.

It is an arithmetic number, because the mean of its divisors is an integer number (715806).

Almost surely, 2^8638816 is an apocalyptic number.

It is an amenable number.

8638816 is a deficient number, since it is larger than the sum of its proper divisors (8540528).

8638816 is a wasteful number, since it uses less digits than its factorization.

8638816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 2726 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 8638816 is about 2939.1862819495. The cubic root of 8638816 is about 205.1877399715.

The spelling of 8638816 in words is "eight million, six hundred thirty-eight thousand, eight hundred sixteen".