987285 has 32 divisors (see below), whose sum is σ = 1749888. Its totient is φ = 472320.

The previous prime is 987251. The next prime is 987293. The reversal of 987285 is 582789.

It is not a de Polignac number, because 987285 - 2⁸ = 987029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 987285.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11854 + ... + 11936.

It is an arithmetic number, because the mean of its divisors is an integer number (54684).

2⁹⁸⁷²⁸⁵ is an apocalyptic number.

It is an amenable number.

987285 is a deficient number, since it is larger than the sum of its proper divisors (762603).

987285 is a wasteful number, since it uses less digits than its factorization.

987285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165.

The product of its digits is 40320, while the sum is 39.

The square root of 987285 is about 993.6221615886. The cubic root of 987285 is about 99.5743575220.

Subtracting from 987285 its reverse (582789), we obtain a square (404496 = 636²).

The spelling of 987285 in words is "nine hundred eighty-seven thousand, two hundred eighty-five".