108440065 has 4 divisors (see below), whose sum is σ = 130128084. Its totient is φ = 86752048.

The previous prime is 108440063. The next prime is 108440069. The reversal of 108440065 is 560044801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560044801 = 19697 ⋅28433.

It can be written as a sum of positive squares in 2 ways, for example, as 23357889 + 85082176 = 4833^2 + 9224^2 .

It is a cyclic number.

It is not a de Polignac number, because 108440065 - 2¹ = 108440063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108440063) 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, 10844002 + ... + 10844011.

It is an arithmetic number, because the mean of its divisors is an integer number (32532021).

Almost surely, 2^108440065 is an apocalyptic number.

It is an amenable number.

108440065 is a deficient number, since it is larger than the sum of its proper divisors (21688019).

108440065 is an equidigital number, since it uses as much as digits as its factorization.

108440065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21688018.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 108440065 is about 10413.4559585183. The cubic root of 108440065 is about 476.8662535391.

Adding to 108440065 its reverse (560044801), we get a palindrome (668484866).

The spelling of 108440065 in words is "one hundred eight million, four hundred forty thousand, sixty-five".