108491 has 8 divisors (see below), whose sum is σ = 116640. Its totient is φ = 100672.

The previous prime is 108463. The next prime is 108497. The reversal of 108491 is 194801.

108491 is nontrivially palindromic in base 2.

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 108491 - 2¹⁰ = 107467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (108497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 1263.

It is an arithmetic number, because the mean of its divisors is an integer number (14580).

2¹⁰⁸⁴⁹¹ is an apocalyptic number.

108491 is a deficient number, since it is larger than the sum of its proper divisors (8149).

108491 is an equidigital number, since it uses as much as digits as its factorization.

108491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 108491 is about 329.3797200800. The cubic root of 108491 is about 47.6940904240.

The spelling of 108491 in words is "one hundred eight thousand, four hundred ninety-one".