68917 has 2 divisors, whose sum is σ = 68918. Its totient is φ = 68916.

The previous prime is 68909. The next prime is 68927. The reversal of 68917 is 71986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54756 + 14161 = 234^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 68917 - 2³ = 68909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34458 + 34459.

It is an arithmetic number, because the mean of its divisors is an integer number (34459).

2⁶⁸⁹¹⁷ is an apocalyptic number.

It is an amenable number.

68917 is a deficient number, since it is larger than the sum of its proper divisors (1).

68917 is an equidigital number, since it uses as much as digits as its factorization.

68917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The square root of 68917 is about 262.5204753919. The cubic root of 68917 is about 40.9992068060. Note that the first 3 decimals are identical.

Subtracting from 68917 its sum of digits (31), we obtain a palindrome (68886).

The spelling of 68917 in words is "sixty-eight thousand, nine hundred seventeen".