287655 has 16 divisors (see below), whose sum is σ = 466944. Its totient is φ = 151200.

The previous prime is 287629. The next prime is 287669. The reversal of 287655 is 556782.

It is a happy number.

It is not a de Polignac number, because 287655 - 2¹⁵ = 254887 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 287655.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830 + ... + 1980.

It is an arithmetic number, because the mean of its divisors is an integer number (29184).

2²⁸⁷⁶⁵⁵ is an apocalyptic number.

287655 is a deficient number, since it is larger than the sum of its proper divisors (179289).

287655 is a wasteful number, since it uses less digits than its factorization.

287655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 16800, while the sum is 33.

The square root of 287655 is about 536.3347835075. The cubic root of 287655 is about 66.0121648835.

The spelling of 287655 in words is "two hundred eighty-seven thousand, six hundred fifty-five".