205981235 has 8 divisors (see below), whose sum is σ = 247602096. Its totient is φ = 164501920.

The previous prime is 205981219. The next prime is 205981247. The reversal of 205981235 is 532189502.

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

It is not a de Polignac number, because 205981235 - 2⁴ = 205981219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205981195 and 205981204.

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, 32156 + ... + 38025.

It is an arithmetic number, because the mean of its divisors is an integer number (30950262).

Almost surely, 2^205981235 is an apocalyptic number.

205981235 is a deficient number, since it is larger than the sum of its proper divisors (41620861).

205981235 is an equidigital number, since it uses as much as digits as its factorization.

205981235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70773.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 205981235 is about 14352.0463697690. The cubic root of 205981235 is about 590.5761249740.

The spelling of 205981235 in words is "two hundred five million, nine hundred eighty-one thousand, two hundred thirty-five".