540611645 has 16 divisors (see below), whose sum is σ = 785023488. Its totient is φ = 348898560.

The previous prime is 540611641. The next prime is 540611723. The reversal of 540611645 is 546116045.

It is not a de Polignac number, because 540611645 - 2² = 540611641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540611641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453701 + ... + 454890.

It is an arithmetic number, because the mean of its divisors is an integer number (49063968).

Almost surely, 2^540611645 is an apocalyptic number.

It is an amenable number.

540611645 is a deficient number, since it is larger than the sum of its proper divisors (244411843).

540611645 is a wasteful number, since it uses less digits than its factorization.

540611645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908620.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 540611645 is about 23251.0568577000. The cubic root of 540611645 is about 814.6326245177.

Adding to 540611645 its product of nonzero digits (14400), we get a palindrome (540626045).

The spelling of 540611645 in words is "five hundred forty million, six hundred eleven thousand, six hundred forty-five".