8638868 has 24 divisors (see below), whose sum is σ = 17875200. Its totient is φ = 3574368.

The previous prime is 8638867. The next prime is 8638891. The reversal of 8638868 is 8688368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638867) 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, 4508 + ... + 6131.

It is an arithmetic number, because the mean of its divisors is an integer number (744800).

Almost surely, 2^8638868 is an apocalyptic number.

It is an amenable number.

8638868 is an abundant number, since it is smaller than the sum of its proper divisors (9236332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8638868 is a wasteful number, since it uses less digits than its factorization.

8638868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10679 (or 10677 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The square root of 8638868 is about 2939.1951279219. The cubic root of 8638868 is about 205.1881516692.

The spelling of 8638868 in words is "eight million, six hundred thirty-eight thousand, eight hundred sixty-eight".