226805 has 4 divisors (see below), whose sum is σ = 272172. Its totient is φ = 181440.

The previous prime is 226799. The next prime is 226813. The reversal of 226805 is 508622.

It is a happy number.

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 27889 + 198916 = 167^2 + 446^2 .

It is not a de Polignac number, because 226805 - 2⁴ = 226789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22676 + ... + 22685.

It is an arithmetic number, because the mean of its divisors is an integer number (68043).

2²²⁶⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

226805 is a deficient number, since it is larger than the sum of its proper divisors (45367).

226805 is an equidigital number, since it uses as much as digits as its factorization.

226805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45366.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 226805 is about 476.2404854693. The cubic root of 226805 is about 60.9842295521.

The spelling of 226805 in words is "two hundred twenty-six thousand, eight hundred five".