287975 has 6 divisors (see below), whose sum is σ = 357120. Its totient is φ = 230360.

The previous prime is 287939. The next prime is 287977. The reversal of 287975 is 579782.

It is a de Polignac number, because none of the positive numbers 2^k-287975 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5735 + ... + 5784.

It is an arithmetic number, because the mean of its divisors is an integer number (59520).

2²⁸⁷⁹⁷⁵ is an apocalyptic number.

287975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

287975 is a deficient number, since it is larger than the sum of its proper divisors (69145).

287975 is a wasteful number, since it uses less digits than its factorization.

287975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529 (or 11524 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 287975 is about 536.6330217197. The cubic root of 287975 is about 66.0366340851.

The spelling of 287975 in words is "two hundred eighty-seven thousand, nine hundred seventy-five".