270665 has 4 divisors (see below), whose sum is σ = 324804. Its totient is φ = 216528.

The previous prime is 270659. The next prime is 270667. The reversal of 270665 is 566072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29584 + 241081 = 172^2 + 491^2 .

It is a cyclic number.

It is not a de Polignac number, because 270665 - 2⁶ = 270601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (270667) 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, 27062 + ... + 27071.

It is an arithmetic number, because the mean of its divisors is an integer number (81201).

2²⁷⁰⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

270665 is a deficient number, since it is larger than the sum of its proper divisors (54139).

270665 is an equidigital number, since it uses as much as digits as its factorization.

270665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54138.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 270665 is about 520.2547452931. The cubic root of 270665 is about 64.6860601249.

The spelling of 270665 in words is "two hundred seventy thousand, six hundred sixty-five".