68217 has 4 divisors (see below), whose sum is σ = 90960. Its totient is φ = 45476.

The previous prime is 68213. The next prime is 68219. The reversal of 68217 is 71286.

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 a cyclic number.

It is not a de Polignac number, because 68217 - 2² = 68213 is a prime.

It is an Ulam number.

It is a D-number.

68217 is a lucky number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 68217.

It is not an unprimeable number, because it can be changed into a prime (68213) 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, 11367 + ... + 11372.

It is an arithmetic number, because the mean of its divisors is an integer number (22740).

2⁶⁸²¹⁷ is an apocalyptic number.

It is an amenable number.

68217 is a deficient number, since it is larger than the sum of its proper divisors (22743).

68217 is a wasteful number, since it uses less digits than its factorization.

68217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22742.

The product of its digits is 672, while the sum is 24.

The square root of 68217 is about 261.1838432982. The cubic root of 68217 is about 40.8599225222.

The spelling of 68217 in words is "sixty-eight thousand, two hundred seventeen".