287085 has 8 divisors (see below), whose sum is σ = 459360. Its totient is φ = 153104.

The previous prime is 287059. The next prime is 287087. The reversal of 287085 is 580782.

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 287085 - 2¹⁰ = 286061 is a prime.

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 287085.

It is not an unprimeable number, because it can be changed into a prime (287087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9555 + ... + 9584.

It is an arithmetic number, because the mean of its divisors is an integer number (57420).

2²⁸⁷⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

287085 is a deficient number, since it is larger than the sum of its proper divisors (172275).

287085 is a wasteful number, since it uses less digits than its factorization.

287085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19147.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 287085 is about 535.8031354891. The cubic root of 287085 is about 65.9685341285.

The spelling of 287085 in words is "two hundred eighty-seven thousand, eighty-five".