235985 has 8 divisors (see below), whose sum is σ = 286440. Its totient is φ = 186624.

The previous prime is 235979. The next prime is 235997. The reversal of 235985 is 589532.

235985 = 343² + 344².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9409 + 226576 = 97^2 + 476^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 235985 - 2¹⁰ = 234961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 761.

It is an arithmetic number, because the mean of its divisors is an integer number (35805).

2²³⁵⁹⁸⁵ is an apocalyptic number.

235985 is the 344-th centered square number.

It is an amenable number.

235985 is a deficient number, since it is larger than the sum of its proper divisors (50455).

235985 is a wasteful number, since it uses less digits than its factorization.

235985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its digits is 10800, while the sum is 32.

The square root of 235985 is about 485.7828733086. The cubic root of 235985 is about 61.7961567626.

The spelling of 235985 in words is "two hundred thirty-five thousand, nine hundred eighty-five".