68489 has 2 divisors, whose sum is σ = 68490. Its totient is φ = 68488.

The previous prime is 68483. The next prime is 68491. The reversal of 68489 is 98486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60025 + 8464 = 245^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 68489 - 2⁴ = 68473 is a prime.

It is a Sophie Germain prime.

Together with 68491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68483) 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 as a sum of consecutive naturals, namely, 34244 + 34245.

It is an arithmetic number, because the mean of its divisors is an integer number (34245).

2⁶⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

68489 is a deficient number, since it is larger than the sum of its proper divisors (1).

68489 is an equidigital number, since it uses as much as digits as its factorization.

68489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 68489 is about 261.7040313025. The cubic root of 68489 is about 40.9141570980.

The spelling of 68489 in words is "sixty-eight thousand, four hundred eighty-nine".