108355609 has 4 divisors (see below), whose sum is σ = 108982116. Its totient is φ = 107729104.

The previous prime is 108355529. The next prime is 108355619. The reversal of 108355609 is 906553801.

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 69355584 + 39000025 = 8328^2 + 6245^2 .

It is a cyclic number.

It is not a de Polignac number, because 108355609 - 2²³ = 99967001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108355619) 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, 312994 + ... + 313339.

It is an arithmetic number, because the mean of its divisors is an integer number (27245529).

Almost surely, 2^108355609 is an apocalyptic number.

It is an amenable number.

108355609 is a deficient number, since it is larger than the sum of its proper divisors (626507).

108355609 is an equidigital number, since it uses as much as digits as its factorization.

108355609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626506.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 108355609 is about 10409.4000307414. The cubic root of 108355609 is about 476.7424226888.

The spelling of 108355609 in words is "one hundred eight million, three hundred fifty-five thousand, six hundred nine".