65589 has 4 divisors (see below), whose sum is σ = 87456. Its totient is φ = 43724.

The previous prime is 65587. The next prime is 65599. The reversal of 65589 is 98556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65589 - 2¹ = 65587 is a prime.

It is a D-number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10929 + ... + 10934.

It is an arithmetic number, because the mean of its divisors is an integer number (21864).

2⁶⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

65589 is a deficient number, since it is larger than the sum of its proper divisors (21867).

65589 is a wasteful number, since it uses less digits than its factorization.

65589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21866.

The product of its digits is 10800, while the sum is 33.

The square root of 65589 is about 256.1034947048. The cubic root of 65589 is about 40.3283391277.

Subtracting from 65589 its sum of digits (33), we obtain a palindrome (65556).

The spelling of 65589 in words is "sixty-five thousand, five hundred eighty-nine".