230665 has 4 divisors (see below), whose sum is σ = 276804. Its totient is φ = 184528.

The previous prime is 230663. The next prime is 230683. The reversal of 230665 is 566032.

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 109561 + 121104 = 331^2 + 348^2 .

It is a cyclic number.

It is not a de Polignac number, because 230665 - 2¹ = 230663 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23062 + ... + 23071.

It is an arithmetic number, because the mean of its divisors is an integer number (69201).

2²³⁰⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

230665 is a deficient number, since it is larger than the sum of its proper divisors (46139).

230665 is an equidigital number, since it uses as much as digits as its factorization.

230665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46138.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 230665 is about 480.2759623383. The cubic root of 230665 is about 61.3282492898.

Adding to 230665 its reverse (566032), we get a palindrome (796697).

The spelling of 230665 in words is "two hundred thirty thousand, six hundred sixty-five".