540716657 has 4 divisors (see below), whose sum is σ = 582310260. Its totient is φ = 499123056.

The previous prime is 540716641. The next prime is 540716677. The reversal of 540716657 is 756617045.

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 131423296 + 409293361 = 11464^2 + 20231^2 .

It is a cyclic number.

It is not a de Polignac number, because 540716657 - 2⁴ = 540716641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540716677) 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, 20796782 + ... + 20796807.

It is an arithmetic number, because the mean of its divisors is an integer number (145577565).

Almost surely, 2^540716657 is an apocalyptic number.

It is an amenable number.

540716657 is a deficient number, since it is larger than the sum of its proper divisors (41593603).

540716657 is a wasteful number, since it uses less digits than its factorization.

540716657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41593602.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 540716657 is about 23253.3149679782. The cubic root of 540716657 is about 814.6853676550.

The spelling of 540716657 in words is "five hundred forty million, seven hundred sixteen thousand, six hundred fifty-seven".