8938665 has 12 divisors (see below), whose sum is σ = 15493764. Its totient is φ = 4767264.

The previous prime is 8938663. The next prime is 8938667. The reversal of 8938665 is 5668398.

It is an interprime number because it is at equal distance from previous prime (8938663) and next prime (8938667).

It can be written as a sum of positive squares in 2 ways, for example, as 4678569 + 4260096 = 2163^2 + 2064^2 .

It is not a de Polignac number, because 8938665 - 2¹ = 8938663 is a prime.

It is a super-3 number, since 3×8938665³ (a number of 22 digits) contains 333 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), and also a Moran number because the ratio is a prime number: 198637 = 8938665 / (8 + 9 + 3 + 8 + 6 + 6 + 5).

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8938665.

It is not an unprimeable number, because it can be changed into a prime (8938663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99274 + ... + 99363.

It is an arithmetic number, because the mean of its divisors is an integer number (1291147).

Almost surely, 2^8938665 is an apocalyptic number.

It is an amenable number.

8938665 is a deficient number, since it is larger than the sum of its proper divisors (6555099).

8938665 is a wasteful number, since it uses less digits than its factorization.

8938665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198648 (or 198645 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 8938665 is about 2989.7600238146. The cubic root of 8938665 is about 207.5347790932.

The spelling of 8938665 in words is "eight million, nine hundred thirty-eight thousand, six hundred sixty-five".