286855 has 8 divisors (see below), whose sum is σ = 348192. Its totient is φ = 226848.

The previous prime is 286831. The next prime is 286859. The reversal of 286855 is 558682.

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 286855 - 2¹¹ = 284807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 286855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237 + ... + 793.

It is an arithmetic number, because the mean of its divisors is an integer number (43524).

2²⁸⁶⁸⁵⁵ is an apocalyptic number.

286855 is a deficient number, since it is larger than the sum of its proper divisors (61337).

286855 is a wasteful number, since it uses less digits than its factorization.

286855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its digits is 19200, while the sum is 34.

The square root of 286855 is about 535.5884614142. The cubic root of 286855 is about 65.9509123828.

The spelling of 286855 in words is "two hundred eighty-six thousand, eight hundred fifty-five".