108613 has 4 divisors (see below), whose sum is σ = 115020. Its totient is φ = 102208.

The previous prime is 108587. The next prime is 108631. The reversal of 108613 is 316801.

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 31329 + 77284 = 177^2 + 278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108613 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3178 + ... + 3211.

It is an arithmetic number, because the mean of its divisors is an integer number (28755).

2¹⁰⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

108613 is a deficient number, since it is larger than the sum of its proper divisors (6407).

108613 is an equidigital number, since it uses as much as digits as its factorization.

108613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 108613 is about 329.5648646321. The cubic root of 108613 is about 47.7119613360.

The spelling of 108613 in words is "one hundred eight thousand, six hundred thirteen".