68569 has 4 divisors (see below), whose sum is σ = 69120. Its totient is φ = 68020.

The previous prime is 68567. The next prime is 68581. The reversal of 68569 is 96586.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68569 - 2¹ = 68567 is a prime.

It is a super-2 number, since 2×68569² = 9403415522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68567) 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, 12 + ... + 370.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2⁶⁸⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

68569 is a deficient number, since it is larger than the sum of its proper divisors (551).

68569 is a wasteful number, since it uses less digits than its factorization.

68569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its digits is 12960, while the sum is 34.

The square root of 68569 is about 261.8568311120. The cubic root of 68569 is about 40.9300811100.

The spelling of 68569 in words is "sixty-eight thousand, five hundred sixty-nine".