217068 has 12 divisors (see below), whose sum is σ = 506520. Its totient is φ = 72352.

The previous prime is 217057. The next prime is 217069. The reversal of 217068 is 860712.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (217069) by changing a digit.

217068 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9033 + ... + 9056.

It is an arithmetic number, because the mean of its divisors is an integer number (42210).

2²¹⁷⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

217068 is an abundant number, since it is smaller than the sum of its proper divisors (289452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217068 is a wasteful number, since it uses less digits than its factorization.

217068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18096 (or 18094 counting only the distinct ones).

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

The square root of 217068 is about 465.9055698315. The cubic root of 217068 is about 60.0987263516.

The spelling of 217068 in words is "two hundred seventeen thousand, sixty-eight".