8638975 has 12 divisors (see below), whose sum is σ = 11343024. Its totient is φ = 6504320.

The previous prime is 8638967. The next prime is 8638991. The reversal of 8638975 is 5798368.

It is not a de Polignac number, because 8638975 - 2³ = 8638967 is a prime.

It is a super-3 number, since 3×8638975³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9739 + ... + 10588.

It is an arithmetic number, because the mean of its divisors is an integer number (945252).

Almost surely, 2^8638975 is an apocalyptic number.

8638975 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8638975 is a deficient number, since it is larger than the sum of its proper divisors (2704049).

8638975 is a wasteful number, since it uses less digits than its factorization.

8638975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20354 (or 20349 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 8638975 is about 2939.2133301276. The cubic root of 8638975 is about 205.1889988111.

The spelling of 8638975 in words is "eight million, six hundred thirty-eight thousand, nine hundred seventy-five".