68889 has 4 divisors (see below), whose sum is σ = 91856. Its totient is φ = 45924.

The previous prime is 68881. The next prime is 68891. The reversal of 68889 is 98886.

68889 is nontrivially palindromic in base 5.

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 not a de Polignac number, because 68889 - 2³ = 68881 is a prime.

It is a D-number.

68889 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (68881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11479 + ... + 11484.

It is an arithmetic number, because the mean of its divisors is an integer number (22964).

2⁶⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

68889 is a deficient number, since it is larger than the sum of its proper divisors (22967).

68889 is a wasteful number, since it uses less digits than its factorization.

68889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22966.

The product of its digits is 27648, while the sum is 39.

The square root of 68889 is about 262.4671408005. The cubic root of 68889 is about 40.9936535884.

It can be divided in two parts, 688 and 89, that added together give a palindrome (777).

The spelling of 68889 in words is "sixty-eight thousand, eight hundred eighty-nine".