271666 has 8 divisors (see below), whose sum is σ = 417564. Its totient is φ = 132480.

The previous prime is 271657. The next prime is 271693. The reversal of 271666 is 666172.

It can be written as a sum of positive squares in 2 ways, for example, as 271441 + 225 = 521^2 + 15^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1575 + ... + 1738.

2²⁷¹⁶⁶⁶ is an apocalyptic number.

271666 is a deficient number, since it is larger than the sum of its proper divisors (145898).

271666 is a wasteful number, since it uses less digits than its factorization.

271666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356.

The product of its digits is 3024, while the sum is 28.

The square root of 271666 is about 521.2158861739. The cubic root of 271666 is about 64.7657048115.

It can be divided in two parts, 27166 and 6, that added together give a palindrome (27172).

The spelling of 271666 in words is "two hundred seventy-one thousand, six hundred sixty-six".