540020693 has 2 divisors, whose sum is σ = 540020694. Its totient is φ = 540020692.

The previous prime is 540020671. The next prime is 540020707. The reversal of 540020693 is 396020045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354870244 + 185150449 = 18838^2 + 13607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540020693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540020653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270010346 + 270010347.

It is an arithmetic number, because the mean of its divisors is an integer number (270010347).

Almost surely, 2^540020693 is an apocalyptic number.

It is an amenable number.

540020693 is a deficient number, since it is larger than the sum of its proper divisors (1).

540020693 is an equidigital number, since it uses as much as digits as its factorization.

540020693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 540020693 is about 23238.3453154479. The cubic root of 540020693 is about 814.3356865944.

The spelling of 540020693 in words is "five hundred forty million, twenty thousand, six hundred ninety-three".