287265 has 16 divisors (see below), whose sum is σ = 501696. Its totient is φ = 139200.

The previous prime is 287257. The next prime is 287269. The reversal of 287265 is 562782.

It is not a de Polignac number, because 287265 - 2³ = 287257 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287265.

It is not an unprimeable number, because it can be changed into a prime (287269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (31356).

2²⁸⁷²⁶⁵ is an apocalyptic number.

It is an amenable number.

287265 is a deficient number, since it is larger than the sum of its proper divisors (214431).

287265 is a wasteful number, since it uses less digits than its factorization.

287265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760.

The product of its digits is 6720, while the sum is 30.

The square root of 287265 is about 535.9710813094. The cubic root of 287265 is about 65.9823184958.

The spelling of 287265 in words is "two hundred eighty-seven thousand, two hundred sixty-five".