233906 has 4 divisors (see below), whose sum is σ = 350862. Its totient is φ = 116952.

The previous prime is 233881. The next prime is 233911. The reversal of 233906 is 609332.

It is a happy number.

233906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 225625 + 8281 = 475^2 + 91^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58475 + ... + 58478.

2²³³⁹⁰⁶ is an apocalyptic number.

233906 is a deficient number, since it is larger than the sum of its proper divisors (116956).

233906 is a wasteful number, since it uses less digits than its factorization.

233906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116955.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 233906 is about 483.6382945963. The cubic root of 233906 is about 61.6141489397.

The spelling of 233906 in words is "two hundred thirty-three thousand, nine hundred six".