540616697 has 4 divisors (see below), whose sum is σ = 541435236. Its totient is φ = 539798160.

The previous prime is 540616691. The next prime is 540616717. The reversal of 540616697 is 796616045.

It is a happy number.

540616697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450670441 + 89946256 = 21229^2 + 9484^2 .

It is a cyclic number.

It is not a de Polignac number, because 540616697 - 2¹⁶ = 540551161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540616691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408278 + ... + 409599.

It is an arithmetic number, because the mean of its divisors is an integer number (135358809).

Almost surely, 2^540616697 is an apocalyptic number.

It is an amenable number.

540616697 is a deficient number, since it is larger than the sum of its proper divisors (818539).

540616697 is an equidigital number, since it uses as much as digits as its factorization.

540616697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818538.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 540616697 is about 23251.1654976691. The cubic root of 540616697 is about 814.6351620825.

The spelling of 540616697 in words is "five hundred forty million, six hundred sixteen thousand, six hundred ninety-seven".