540065611 has 4 divisors (see below), whose sum is σ = 540142992. Its totient is φ = 539988232.

The previous prime is 540065587. The next prime is 540065623. The reversal of 540065611 is 116560045.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540065611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540065611.

It is not an unprimeable number, because it can be changed into a prime (540065641) 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, 27055 + ... + 42568.

It is an arithmetic number, because the mean of its divisors is an integer number (135035748).

Almost surely, 2^540065611 is an apocalyptic number.

540065611 is a deficient number, since it is larger than the sum of its proper divisors (77381).

540065611 is an equidigital number, since it uses as much as digits as its factorization.

540065611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77380.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 540065611 is about 23239.3117583116. The cubic root of 540065611 is about 814.3582643195.

The spelling of 540065611 in words is "five hundred forty million, sixty-five thousand, six hundred eleven".