171712 has 14 divisors (see below), whose sum is σ = 340868. Its totient is φ = 85824.

The previous prime is 171707. The next prime is 171713. The reversal of 171712 is 217171.

It is a self number, because there is not a number n which added to its sum of digits gives 171712.

It is not an unprimeable number, because it can be changed into a prime (171713) by changing a digit.

171712 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 as a sum of consecutive naturals, namely, 1278 + ... + 1405.

2¹⁷¹⁷¹² is an apocalyptic number.

It is an amenable number.

171712 is a deficient number, since it is larger than the sum of its proper divisors (169156).

171712 is an equidigital number, since it uses as much as digits as its factorization.

171712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695 (or 2685 counting only the distinct ones).

The product of its digits is 98, while the sum is 19.

The square root of 171712 is about 414.3814667670. The cubic root of 171712 is about 55.5819205231.

Adding to 171712 its reverse (217171), we get a palindrome (388883).

The spelling of 171712 in words is "one hundred seventy-one thousand, seven hundred twelve", and thus it is an iban number.