540035661 has 16 divisors (see below), whose sum is σ = 789903360. Its totient is φ = 325462320.

The previous prime is 540035647. The next prime is 540035663. The reversal of 540035661 is 166530045.

It is not a de Polignac number, because 540035661 - 2⁷ = 540035533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540035663) 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, 39805 + ... + 51618.

It is an arithmetic number, because the mean of its divisors is an integer number (49368960).

Almost surely, 2^540035661 is an apocalyptic number.

It is an amenable number.

540035661 is a deficient number, since it is larger than the sum of its proper divisors (249867699).

540035661 is a wasteful number, since it uses less digits than its factorization.

540035661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91616.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 540035661 is about 23238.6673671276. The cubic root of 540035661 is about 814.3432102962.

The spelling of 540035661 in words is "five hundred forty million, thirty-five thousand, six hundred sixty-one".