8638875 has 48 divisors (see below), whose sum is σ = 17813952. Its totient is φ = 3945600.

The previous prime is 8638867. The next prime is 8638891. The reversal of 8638875 is 5788368.

8638875 is a `hidden beast` number, since 8 + 638 + 8 + 7 + 5 = 666.

8638875 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8638875 - 2³ = 8638867 is a prime.

It is a super-2 number, since 2×8638875² = 149260322531250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8638875.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7327 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (371124).

Almost surely, 2^8638875 is an apocalyptic number.

8638875 is an abundant number, since it is smaller than the sum of its proper divisors (9175077).

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

8638875 is a wasteful number, since it uses less digits than its factorization.

8638875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1112 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 8638875 is about 2939.1963187239. The cubic root of 8638875 is about 205.1882070899.

The spelling of 8638875 in words is "eight million, six hundred thirty-eight thousand, eight hundred seventy-five".