271669 has 4 divisors (see below), whose sum is σ = 272844. Its totient is φ = 270496.

The previous prime is 271657. The next prime is 271693. The reversal of 271669 is 966172.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 131044 + 140625 = 362^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 271669 - 2⁵ = 271637 is a prime.

It is a super-2 number, since 2×271669² = 147608091122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 271669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (68211).

2²⁷¹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

271669 is a deficient number, since it is larger than the sum of its proper divisors (1175).

271669 is an equidigital number, since it uses as much as digits as its factorization.

271669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its digits is 4536, while the sum is 31.

The square root of 271669 is about 521.2187640521. The cubic root of 271669 is about 64.7659432126.

The spelling of 271669 in words is "two hundred seventy-one thousand, six hundred sixty-nine".