226685 has 4 divisors (see below), whose sum is σ = 272028. Its totient is φ = 181344.

The previous prime is 226669. The next prime is 226691. The reversal of 226685 is 586622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586622 = 2 ⋅293311.

It can be written as a sum of positive squares in 2 ways, for example, as 120409 + 106276 = 347^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 226685 - 2⁴ = 226669 is a prime.

It is a Duffinian number.

It is a Curzon 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, 22664 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (68007).

2²²⁶⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

226685 is a deficient number, since it is larger than the sum of its proper divisors (45343).

226685 is an equidigital number, since it uses as much as digits as its factorization.

226685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45342.

The product of its digits is 5760, while the sum is 29.

The square root of 226685 is about 476.1144820314. The cubic root of 226685 is about 60.9734722958.

The spelling of 226685 in words is "two hundred twenty-six thousand, six hundred eighty-five".