223065 has 12 divisors (see below), whose sum is σ = 386724. Its totient is φ = 118944.

The previous prime is 223063. The next prime is 223087. The reversal of 223065 is 560322.

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 84681 = 372^2 + 291^2 .

It is not a de Polignac number, because 223065 - 2¹ = 223063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223061) 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 11 ways as a sum of consecutive naturals, for example, 2434 + ... + 2523.

It is an arithmetic number, because the mean of its divisors is an integer number (32227).

2²²³⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

223065 is a deficient number, since it is larger than the sum of its proper divisors (163659).

223065 is a wasteful number, since it uses less digits than its factorization.

223065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968 (or 4965 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 223065 is about 472.2975756872. The cubic root of 223065 is about 60.6471612749.

Adding to 223065 its reverse (560322), we get a palindrome (783387).

The spelling of 223065 in words is "two hundred twenty-three thousand, sixty-five".