270891 has 16 divisors (see below), whose sum is σ = 409600. Its totient is φ = 176904.

The previous prime is 270859. The next prime is 270899. The reversal of 270891 is 198072.

It is not a de Polignac number, because 270891 - 2⁵ = 270859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

270891 is a modest number, since divided by 891 gives 27 as remainder.

270891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (270899) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2070 + ... + 2196.

It is an arithmetic number, because the mean of its divisors is an integer number (25600).

2²⁷⁰⁸⁹¹ is an apocalyptic number.

270891 is a deficient number, since it is larger than the sum of its proper divisors (138709).

270891 is a wasteful number, since it uses less digits than its factorization.

270891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 270891 is about 520.4719012588. The cubic root of 270891 is about 64.7040589828.

The spelling of 270891 in words is "two hundred seventy thousand, eight hundred ninety-one".