288565 has 4 divisors (see below), whose sum is σ = 346284. Its totient is φ = 230848.

The previous prime is 288559. The next prime is 288571. The reversal of 288565 is 565882.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (288559) and next prime (288571).

It can be written as a sum of positive squares in 2 ways, for example, as 96721 + 191844 = 311^2 + 438^2 .

It is a cyclic number.

It is not a de Polignac number, because 288565 - 2⁹ = 288053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 288565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28852 + ... + 28861.

It is an arithmetic number, because the mean of its divisors is an integer number (86571).

2²⁸⁸⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

288565 is a deficient number, since it is larger than the sum of its proper divisors (57719).

288565 is an equidigital number, since it uses as much as digits as its factorization.

288565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57718.

The product of its digits is 19200, while the sum is 34.

The square root of 288565 is about 537.1824643452. The cubic root of 288565 is about 66.0817016966.

The spelling of 288565 in words is "two hundred eighty-eight thousand, five hundred sixty-five".