109605 has 8 divisors (see below), whose sum is σ = 175392. Its totient is φ = 58448.

The previous prime is 109597. The next prime is 109609. The reversal of 109605 is 506901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109605 - 2³ = 109597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3639 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (21924).

2¹⁰⁹⁶⁰⁵ is an apocalyptic number.

109605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109605 is a deficient number, since it is larger than the sum of its proper divisors (65787).

109605 is an equidigital number, since it uses as much as digits as its factorization.

109605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7315.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 109605 is about 331.0664585850. The cubic root of 109605 is about 47.8567779412.

The spelling of 109605 in words is "one hundred nine thousand, six hundred five".