289563 has 8 divisors (see below), whose sum is σ = 388608. Its totient is φ = 191784.

The previous prime is 289559. The next prime is 289573. The reversal of 289563 is 365982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289563 - 2² = 289559 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 8⁴ + 5⁴ + 9² + 6⁷ + 3⁶ .

289563 is a lucky number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (289543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (48576).

2²⁸⁹⁵⁶³ is an apocalyptic number.

289563 is a deficient number, since it is larger than the sum of its proper divisors (99045).

289563 is a wasteful number, since it uses less digits than its factorization.

289563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its digits is 12960, while the sum is 33.

The square root of 289563 is about 538.1105834306. The cubic root of 289563 is about 66.1577950729.

It can be divided in two parts, 28956 and 3, that multiplied together give a palindrome (86868).

The spelling of 289563 in words is "two hundred eighty-nine thousand, five hundred sixty-three".