540065 has 4 divisors (see below), whose sum is σ = 648084.
Its totient is φ = 432048.
The previous prime is 540061. The next prime is 540079. The reversal of 540065 is 560045.
Subtracting from 540065 its sum of digits (20), we obtain a palindrome (540045).
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 305809 + 234256 = 553^2 + 484^2
It is a cyclic number.
It is not a de Polignac number, because 540065 - 22 = 540061 is a prime.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540065.
It is not an unprimeable number, because it can be changed into a prime (540061) 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, 54002 + ... + 54011.
It is an arithmetic number, because the mean of its divisors is an integer number (162021).
2540065 is an apocalyptic number.
It is an amenable number.
540065 is a deficient number, since it is larger than the sum of its proper divisors (108019).
540065 is a wasteful number, since it uses less digits than its factorization.
540065 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 108018.
The product of its (nonzero) digits is 600, while the sum is 20.
The square root of 540065 is about 734.8911484023.
The cubic root of 540065 is about 81.4357957213.
The spelling of 540065 in words is "five hundred forty thousand, sixty-five".