540660073 has 2 divisors, whose sum is σ = 540660074. Its totient is φ = 540660072.

The previous prime is 540660053. The next prime is 540660077. The reversal of 540660073 is 370066045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495863824 + 44796249 = 22268^2 + 6693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540660073 is a prime.

It is not a weakly prime, because it can be changed into another prime (540660077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270330036 + 270330037.

It is an arithmetic number, because the mean of its divisors is an integer number (270330037).

Almost surely, 2^540660073 is an apocalyptic number.

It is an amenable number.

540660073 is a deficient number, since it is larger than the sum of its proper divisors (1).

540660073 is an equidigital number, since it uses as much as digits as its factorization.

540660073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 540660073 is about 23252.0982494054. The cubic root of 540660073 is about 814.6569487260.

The spelling of 540660073 in words is "five hundred forty million, six hundred sixty thousand, seventy-three".