68559 has 4 divisors (see below), whose sum is σ = 91416. Its totient is φ = 45704.

The previous prime is 68543. The next prime is 68567. The reversal of 68559 is 95586.

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

It is a cyclic number.

It is not a de Polignac number, because 68559 - 2⁴ = 68543 is a prime.

It is a D-number.

68559 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11424 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (22854).

2⁶⁸⁵⁵⁹ is an apocalyptic number.

68559 is a deficient number, since it is larger than the sum of its proper divisors (22857).

68559 is a wasteful number, since it uses less digits than its factorization.

68559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22856.

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

The square root of 68559 is about 261.8377360122. The cubic root of 68559 is about 40.9280912861.

The spelling of 68559 in words is "sixty-eight thousand, five hundred fifty-nine".