271806 has 16 divisors (see below), whose sum is σ = 550800. Its totient is φ = 89408.

The previous prime is 271787. The next prime is 271807. The reversal of 271806 is 608172.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271807) by changing a digit.

271806 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 7 ways as a sum of consecutive naturals, for example, 280 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (34425).

2²⁷¹⁸⁰⁶ is an apocalyptic number.

271806 is an abundant number, since it is smaller than the sum of its proper divisors (278994).

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

271806 is a wasteful number, since it uses less digits than its factorization.

271806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603.

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

The square root of 271806 is about 521.3501702311. The cubic root of 271806 is about 64.7768283254.

Adding to 271806 its reverse (608172), we get a palindrome (879978).

The spelling of 271806 in words is "two hundred seventy-one thousand, eight hundred six".