285895 has 4 divisors (see below), whose sum is σ = 343080. Its totient is φ = 228712.

The previous prime is 285871. The next prime is 285937. The reversal of 285895 is 598582.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 285895 - 2⁷ = 285767 is a prime.

It is a congruent number.

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, 28585 + ... + 28594.

It is an arithmetic number, because the mean of its divisors is an integer number (85770).

2²⁸⁵⁸⁹⁵ is an apocalyptic number.

285895 is a deficient number, since it is larger than the sum of its proper divisors (57185).

285895 is an equidigital number, since it uses as much as digits as its factorization.

285895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57184.

The product of its digits is 28800, while the sum is 37.

The square root of 285895 is about 534.6914998389. The cubic root of 285895 is about 65.8772588692.

The spelling of 285895 in words is "two hundred eighty-five thousand, eight hundred ninety-five".