289065 has 16 divisors (see below), whose sum is σ = 528768. Its totient is φ = 132096.

The previous prime is 289063. The next prime is 289067. The reversal of 289065 is 560982.

It is an interprime number because it is at equal distance from previous prime (289063) and next prime (289067).

It is not a de Polignac number, because 289065 - 2¹ = 289063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289063) 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, 1272 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (33048).

2²⁸⁹⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

289065 is a deficient number, since it is larger than the sum of its proper divisors (239703).

289065 is a wasteful number, since it uses less digits than its factorization.

289065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 289065 is about 537.6476541379. The cubic root of 289065 is about 66.1198465234.

The spelling of 289065 in words is "two hundred eighty-nine thousand, sixty-five".