217671 has 12 divisors (see below), whose sum is σ = 303912. Its totient is φ = 138528.

The previous prime is 217667. The next prime is 217681. The reversal of 217671 is 176712.

217671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 217671 - 2² = 217667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4081 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (25326).

2²¹⁷⁶⁷¹ is an apocalyptic number.

217671 is a deficient number, since it is larger than the sum of its proper divisors (86241).

217671 is an equidigital number, since it uses as much as digits as its factorization.

217671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 93 counting only the distinct ones).

The product of its digits is 588, while the sum is 24.

The square root of 217671 is about 466.5522478780. The cubic root of 217671 is about 60.1543249454.

It can be divided in two parts, 217 and 671, that added together give a palindrome (888).

The spelling of 217671 in words is "two hundred seventeen thousand, six hundred seventy-one".