108608609 has 4 divisors (see below), whose sum is σ = 110389140. Its totient is φ = 106828080.

The previous prime is 108608573. The next prime is 108608639. The reversal of 108608609 is 906806801.

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 1030225 + 107578384 = 1015^2 + 10372^2 .

It is a de Polignac number, because none of the positive numbers 2^k-108608609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108608639) 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, 890174 + ... + 890295.

It is an arithmetic number, because the mean of its divisors is an integer number (27597285).

Almost surely, 2^108608609 is an apocalyptic number.

It is an amenable number.

108608609 is a deficient number, since it is larger than the sum of its proper divisors (1780531).

108608609 is an equidigital number, since it uses as much as digits as its factorization.

108608609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780530.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 108608609 is about 10421.5454228248. The cubic root of 108608609 is about 477.1131836186.

The spelling of 108608609 in words is "one hundred eight million, six hundred eight thousand, six hundred nine".