235805 has 4 divisors (see below), whose sum is σ = 282972. Its totient is φ = 188640.

The previous prime is 235793. The next prime is 235811. The reversal of 235805 is 508532.

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 58564 + 177241 = 242^2 + 421^2 .

It is not a de Polignac number, because 235805 - 2⁴ = 235789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 235805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23576 + ... + 23585.

It is an arithmetic number, because the mean of its divisors is an integer number (70743).

2²³⁵⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

235805 is a deficient number, since it is larger than the sum of its proper divisors (47167).

235805 is an equidigital number, since it uses as much as digits as its factorization.

235805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47166.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 235805 is about 485.5975700104. The cubic root of 235805 is about 61.7804408801.

The spelling of 235805 in words is "two hundred thirty-five thousand, eight hundred five".