663252543 has 20 divisors (see below), whose sum is σ = 991494328. Its totient is φ = 441851760.

The previous prime is 663252529. The next prime is 663252553. The reversal of 663252543 is 345252366.

663252543 is a `hidden beast` number, since 6 + 63 + 2 + 52 + 543 = 666.

It is not a de Polignac number, because 663252543 - 2⁸ = 663252287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663252498 and 663252507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663252553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 183948 + ... + 187518.

Almost surely, 2^663252543 is an apocalyptic number.

663252543 is a deficient number, since it is larger than the sum of its proper divisors (328241785).

663252543 is a wasteful number, since it uses less digits than its factorization.

663252543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876 (or 5867 counting only the distinct ones).

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

The square root of 663252543 is about 25753.6898909651. The cubic root of 663252543 is about 872.0866559331.

The spelling of 663252543 in words is "six hundred sixty-three million, two hundred fifty-two thousand, five hundred forty-three".