270405 has 16 divisors (see below), whose sum is σ = 480960. Its totient is φ = 144144.

The previous prime is 270379. The next prime is 270407. The reversal of 270405 is 504072.

It is a happy number.

It is not a de Polignac number, because 270405 - 2¹⁴ = 254021 is a prime.

270405 is a modest number, since divided by 405 gives 270 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867 + ... + 1136.

It is an arithmetic number, because the mean of its divisors is an integer number (30060).

2²⁷⁰⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

270405 is a deficient number, since it is larger than the sum of its proper divisors (210555).

270405 is a wasteful number, since it uses less digits than its factorization.

270405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 270405 is about 520.0048076701. The cubic root of 270405 is about 64.6653410765.

Adding to 270405 its reverse (504072), we get a palindrome (774477).

It can be divided in two parts, 2 and 70405, that added together give a palindrome (70407).

The spelling of 270405 in words is "two hundred seventy thousand, four hundred five".