666233 has 2 divisors, whose sum is σ = 666234. Its totient is φ = 666232.

The previous prime is 666229. The next prime is 666269. The reversal of 666233 is 332666.

It is a happy number.

666233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659344 + 6889 = 812^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 666233 - 2² = 666229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (666203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333116 + 333117.

It is an arithmetic number, because the mean of its divisors is an integer number (333117).

2⁶⁶⁶²³³ is an apocalyptic number.

It is an amenable number.

666233 is a deficient number, since it is larger than the sum of its proper divisors (1).

666233 is an equidigital number, since it uses as much as digits as its factorization.

666233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 26.

The square root of 666233 is about 816.2309722131. The cubic root of 666233 is about 87.3391002284.

Adding to 666233 its reverse (332666), we get a palindrome (998899).

The spelling of 666233 in words is "six hundred sixty-six thousand, two hundred thirty-three".