108173609 has 4 divisors (see below), whose sum is σ = 110007120. Its totient is φ = 106340100.

The previous prime is 108173603. The next prime is 108173627. The reversal of 108173609 is 906371801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906371801 = 19 ⋅47703779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108173609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108173603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916667 + ... + 916784.

It is an arithmetic number, because the mean of its divisors is an integer number (27501780).

Almost surely, 2^108173609 is an apocalyptic number.

It is an amenable number.

108173609 is a deficient number, since it is larger than the sum of its proper divisors (1833511).

108173609 is an equidigital number, since it uses as much as digits as its factorization.

108173609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833510.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 108173609 is about 10400.6542582666. The cubic root of 108173609 is about 476.4753522322.

The spelling of 108173609 in words is "one hundred eight million, one hundred seventy-three thousand, six hundred nine".