226665 has 32 divisors (see below), whose sum is σ = 426240. Its totient is φ = 114048.

The previous prime is 226663. The next prime is 226669. The reversal of 226665 is 566622.

It is not a de Polignac number, because 226665 - 2¹ = 226663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

226665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (226663) 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 31 ways as a sum of consecutive naturals, for example, 3069 + ... + 3141.

It is an arithmetic number, because the mean of its divisors is an integer number (13320).

2²²⁶⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

226665 is a deficient number, since it is larger than the sum of its proper divisors (199575).

226665 is a wasteful number, since it uses less digits than its factorization.

226665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 104 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 226665 is about 476.0934782162. The cubic root of 226665 is about 60.9716790507.

The spelling of 226665 in words is "two hundred twenty-six thousand, six hundred sixty-five".