108005 has 4 divisors (see below), whose sum is σ = 129612. Its totient is φ = 86400.

The previous prime is 107999. The next prime is 108007. The reversal of 108005 is 500801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70756 + 37249 = 266^2 + 193^2 .

It is not a de Polignac number, because 108005 - 2⁶ = 107941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10796 + ... + 10805.

It is an arithmetic number, because the mean of its divisors is an integer number (32403).

2¹⁰⁸⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

108005 is a deficient number, since it is larger than the sum of its proper divisors (21607).

108005 is an equidigital number, since it uses as much as digits as its factorization.

108005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21606.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 108005 is about 328.6411416728. The cubic root of 108005 is about 47.6227664556.

Adding to 108005 its reverse (500801), we get a palindrome (608806).

The spelling of 108005 in words is "one hundred eight thousand, five".