109806 has 8 divisors (see below), whose sum is σ = 219624. Its totient is φ = 36600.

The previous prime is 109793. The next prime is 109807. The reversal of 109806 is 608901.

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

109806 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109806.

It is not an unprimeable number, because it can be changed into a prime (109807) 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 3 ways as a sum of consecutive naturals, for example, 9145 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (27453).

2¹⁰⁹⁸⁰⁶ is an apocalyptic number.

109806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109806 is a wasteful number, since it uses less digits than its factorization.

109806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18306.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 109806 is about 331.3698839665. The cubic root of 109806 is about 47.8860142542.

The spelling of 109806 in words is "one hundred nine thousand, eight hundred six".