271690 has 16 divisors (see below), whose sum is σ = 495720. Its totient is φ = 107200.

The previous prime is 271657. The next prime is 271693. The reversal of 271690 is 96172.

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 47961 = 473^2 + 219^2 .

It is a super-2 number, since 2×271690² = 147630912200, which contains 22 as substring.

It is a plaindrome in base 12 and base 15.

It is not an unprimeable number, because it can be changed into a prime (271693) by changing a digit.

271690 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 876 + ... + 1144.

2²⁷¹⁶⁹⁰ is an apocalyptic number.

271690 is a deficient number, since it is larger than the sum of its proper divisors (224030).

271690 is a wasteful number, since it uses less digits than its factorization.

271690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 271690 is about 521.2389087549. The cubic root of 271690 is about 64.7676119709.

It can be divided in two parts, 271 and 690, that added together give a square (961 = 31²).

The spelling of 271690 in words is "two hundred seventy-one thousand, six hundred ninety".