540563643 has 12 divisors (see below), whose sum is σ = 784517448. Its totient is φ = 358666560.

The previous prime is 540563593. The next prime is 540563651. The reversal of 540563643 is 346365045.

540563643 is a `hidden beast` number, since 5 + 4 + 0 + 5 + 6 + 3 + 643 = 666.

It is not a de Polignac number, because 540563643 - 2¹⁶ = 540498107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 540563598 and 540563607.

It is not an unprimeable number, because it can be changed into a prime (540563663) 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 in 11 ways as a sum of consecutive naturals, for example, 140430 + ... + 144227.

It is an arithmetic number, because the mean of its divisors is an integer number (65376454).

Almost surely, 2^540563643 is an apocalyptic number.

540563643 is a deficient number, since it is larger than the sum of its proper divisors (243953805).

540563643 is a wasteful number, since it uses less digits than its factorization.

540563643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284874 (or 284871 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The square root of 540563643 is about 23250.0245806322. The cubic root of 540563643 is about 814.6085128453.

The spelling of 540563643 in words is "five hundred forty million, five hundred sixty-three thousand, six hundred forty-three".