540711665 has 8 divisors (see below), whose sum is σ = 698765928. Its totient is φ = 399294720.

The previous prime is 540711653. The next prime is 540711701. The reversal of 540711665 is 566117045.

It can be written as a sum of positive squares in 4 ways, for example, as 8579041 + 532132624 = 2929^2 + 23068^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 540711665 - 2¹⁶ = 540646129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4159256 + ... + 4159385.

It is an arithmetic number, because the mean of its divisors is an integer number (87345741).

Almost surely, 2^540711665 is an apocalyptic number.

It is an amenable number.

540711665 is a deficient number, since it is larger than the sum of its proper divisors (158054263).

540711665 is a wasteful number, since it uses less digits than its factorization.

540711665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8318659.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 540711665 is about 23253.2076281962. The cubic root of 540711665 is about 814.6828605367.

The spelling of 540711665 in words is "five hundred forty million, seven hundred eleven thousand, six hundred sixty-five".