87287 has 4 divisors (see below), whose sum is σ = 87936. Its totient is φ = 86640.

The previous prime is 87281. The next prime is 87293. The reversal of 87287 is 78278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78278 = 2 ⋅39139.

It is an interprime number because it is at equal distance from previous prime (87281) and next prime (87293).

It is a cyclic number.

It is not a de Polignac number, because 87287 - 2⁶ = 87223 is a prime.

It is a Duffinian number.

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 87287.

It is not an unprimeable number, because it can be changed into a prime (87281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 419.

It is an arithmetic number, because the mean of its divisors is an integer number (21984).

2⁸⁷²⁸⁷ is an apocalyptic number.

87287 is a deficient number, since it is larger than the sum of its proper divisors (649).

87287 is a wasteful number, since it uses less digits than its factorization.

87287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 6272, while the sum is 32.

The square root of 87287 is about 295.4437340679. The cubic root of 87287 is about 44.3591472832.

Subtracting from 87287 its reverse (78278), we obtain a palindrome (9009).

It can be divided in two parts, 872 and 87, that added together give a palindrome (959).

The spelling of 87287 in words is "eighty-seven thousand, two hundred eighty-seven".