271686 has 8 divisors (see below), whose sum is σ = 543384. Its totient is φ = 90560.

The previous prime is 271657. The next prime is 271693. The reversal of 271686 is 686172.

It is a happy number.

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

271686 is an admirable number.

It is a congruent number.

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, 22635 + ... + 22646.

It is an arithmetic number, because the mean of its divisors is an integer number (67923).

2²⁷¹⁶⁸⁶ is an apocalyptic number.

271686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

271686 is a wasteful number, since it uses less digits than its factorization.

271686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45286.

The product of its digits is 4032, while the sum is 30.

The square root of 271686 is about 521.2350717287. The cubic root of 271686 is about 64.7672941188.

The spelling of 271686 in words is "two hundred seventy-one thousand, six hundred eighty-six".