271663 has 6 divisors (see below), whose sum is σ = 312056. Its totient is φ = 231672.

The previous prime is 271657. The next prime is 271693. The reversal of 271663 is 366172.

It is a de Polignac number, because none of the positive numbers 2^k-271663 is a prime.

It is an Ulam number.

It is a Duffinian number.

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 (271603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1281 + ... + 1477.

271663 is a Friedman number, since it can be written as 7*(66*3-1)^2, using all its digits and the basic arithmetic operations.

2²⁷¹⁶⁶³ is an apocalyptic number.

271663 is a deficient number, since it is larger than the sum of its proper divisors (40393).

271663 is an frugal number, since it uses more digits than its factorization.

271663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 204 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 271663 is about 521.2130082797. The cubic root of 271663 is about 64.7654664087.

The spelling of 271663 in words is "two hundred seventy-one thousand, six hundred sixty-three".