108861 has 8 divisors (see below), whose sum is σ = 146784. Its totient is φ = 71760.

The previous prime is 108827. The next prime is 108863. The reversal of 108861 is 168801.

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

It is not a de Polignac number, because 108861 - 2¹⁰ = 107837 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108863) 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, 255 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (18348).

2¹⁰⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

108861 is a deficient number, since it is larger than the sum of its proper divisors (37923).

108861 is a wasteful number, since it uses less digits than its factorization.

108861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 108861 is about 329.9409037995. The cubic root of 108861 is about 47.7482478821.

It can be divided in two parts, 108 and 861, that added together give a palindrome (969).

The spelling of 108861 in words is "one hundred eight thousand, eight hundred sixty-one".