109613 has 6 divisors (see below), whose sum is σ = 127566. Its totient is φ = 93912.

The previous prime is 109609. The next prime is 109619. The reversal of 109613 is 316901.

It can be written as a sum of positive squares in only one way, i.e., 103684 + 5929 = 322^2 + 77^2 .

It is not a de Polignac number, because 109613 - 2² = 109609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1070 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (21261).

2¹⁰⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

109613 is a deficient number, since it is larger than the sum of its proper divisors (17953).

109613 is an equidigital number, since it uses as much as digits as its factorization.

109613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 109613 is about 331.0785405308. The cubic root of 109613 is about 47.8579422582.

The spelling of 109613 in words is "one hundred nine thousand, six hundred thirteen".