540616385 has 8 divisors (see below), whose sum is σ = 653475816. Its totient is φ = 429335680.

The previous prime is 540616333. The next prime is 540616387. The reversal of 540616385 is 583616045.

It can be written as a sum of positive squares in 4 ways, for example, as 216472369 + 324144016 = 14713^2 + 18004^2 .

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

It is not a de Polignac number, because 540616385 - 2¹⁶ = 540550849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540616387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393926 + ... + 395295.

It is an arithmetic number, because the mean of its divisors is an integer number (81684477).

Almost surely, 2^540616385 is an apocalyptic number.

It is an amenable number.

540616385 is a deficient number, since it is larger than the sum of its proper divisors (112859431).

540616385 is a wasteful number, since it uses less digits than its factorization.

540616385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789363.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 540616385 is about 23251.1587883271. The cubic root of 540616385 is about 814.6350053687.

The spelling of 540616385 in words is "five hundred forty million, six hundred sixteen thousand, three hundred eighty-five".