108838665 has 24 divisors (see below), whose sum is σ = 203166600. Its totient is φ = 53581824.

The previous prime is 108838661. The next prime is 108838673. The reversal of 108838665 is 566838801.

It can be written as a sum of positive squares in 4 ways, for example, as 95481 + 108743184 = 309^2 + 10428^2 .

It is not a de Polignac number, because 108838665 - 2² = 108838661 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 108838665.

It is not an unprimeable number, because it can be changed into a prime (108838661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92440 + ... + 93609.

It is an arithmetic number, because the mean of its divisors is an integer number (8465275).

Almost surely, 2^108838665 is an apocalyptic number.

108838665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108838665 is a deficient number, since it is larger than the sum of its proper divisors (94327935).

108838665 is a wasteful number, since it uses less digits than its factorization.

108838665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186073 (or 186070 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 108838665 is about 10432.5771025188. The cubic root of 108838665 is about 477.4498215777.

The spelling of 108838665 in words is "one hundred eight million, eight hundred thirty-eight thousand, six hundred sixty-five".