272605 has 4 divisors (see below), whose sum is σ = 327132. Its totient is φ = 218080.

The previous prime is 272603. The next prime is 272621. The reversal of 272605 is 506272.

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 103684 + 168921 = 322^2 + 411^2 .

It is not a de Polignac number, because 272605 - 2¹ = 272603 is a prime.

It is a Smith number, since the sum of its digits (22) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (272603) 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, 27256 + ... + 27265.

It is an arithmetic number, because the mean of its divisors is an integer number (81783).

2²⁷²⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

272605 is a deficient number, since it is larger than the sum of its proper divisors (54527).

272605 is an equidigital number, since it uses as much as digits as its factorization.

272605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54526.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 272605 is about 522.1158875192. The cubic root of 272605 is about 64.8402388141.

Adding to 272605 its reverse (506272), we get a palindrome (778877).

The spelling of 272605 in words is "two hundred seventy-two thousand, six hundred five".