540068 has 6 divisors (see below), whose sum is σ = 945126. Its totient is φ = 270032.

The previous prime is 540061. The next prime is 540079. The reversal of 540068 is 860045.

It can be written as a sum of positive squares in only one way, i.e., 506944 + 33124 = 712^2 + 182^2 .

It is not an unprimeable number, because it can be changed into a prime (540061) by changing a digit.

540068 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67505 + ... + 67512.

It is an arithmetic number, because the mean of its divisors is an integer number (157521).

2⁵⁴⁰⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

540068 is a deficient number, since it is larger than the sum of its proper divisors (405058).

540068 is a wasteful number, since it uses less digits than its factorization.

540068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135021 (or 135019 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 540068 is about 734.8931895180. The cubic root of 540068 is about 81.4359465099.

Subtracting from 540068 its sum of digits (23), we obtain a palindrome (540045).

The spelling of 540068 in words is "five hundred forty thousand, sixty-eight".