68017 has 4 divisors (see below), whose sum is σ = 72036. Its totient is φ = 64000.

The previous prime is 67993. The next prime is 68023. The reversal of 68017 is 71086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71086 = 2 ⋅35543.

It can be written as a sum of positive squares in 2 ways, for example, as 24336 + 43681 = 156^2 + 209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68087) 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, 1984 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (18009).

2⁶⁸⁰¹⁷ is an apocalyptic number.

It is an amenable number.

68017 is a deficient number, since it is larger than the sum of its proper divisors (4019).

68017 is a wasteful number, since it uses less digits than its factorization.

68017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 68017 is about 260.8006901831. The cubic root of 68017 is about 40.8199521150.

The spelling of 68017 in words is "sixty-eight thousand, seventeen".