540045665 has 8 divisors (see below), whose sum is σ = 650577960. Its totient is φ = 430354432.

The previous prime is 540045629. The next prime is 540045677. The reversal of 540045665 is 566540045.

It can be written as a sum of positive squares in 4 ways, for example, as 313573264 + 226472401 = 17708^2 + 15049^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 540045665 - 2¹² = 540041569 is a prime.

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, 208850 + ... + 211419.

It is an arithmetic number, because the mean of its divisors is an integer number (81322245).

Almost surely, 2^540045665 is an apocalyptic number.

It is an amenable number.

540045665 is a deficient number, since it is larger than the sum of its proper divisors (110532295).

540045665 is a wasteful number, since it uses less digits than its factorization.

540045665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420531.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 540045665 is about 23238.8826108314. The cubic root of 540045665 is about 814.3482387538.

The spelling of 540045665 in words is "five hundred forty million, forty-five thousand, six hundred sixty-five".