543663 has 12 divisors (see below), whose sum is σ = 812760. Its totient is φ = 349776.

The previous prime is 543661. The next prime is 543671. The reversal of 543663 is 366345.

It is not a de Polignac number, because 543663 - 2¹ = 543661 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 5⁵ + 4⁵ + 6³ + 3⁸ + 6⁴ + 3¹² .

543663 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 543663.

It is not an unprimeable number, because it can be changed into a prime (543661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 781 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (67730).

2⁵⁴³⁶⁶³ is an apocalyptic number.

543663 is a deficient number, since it is larger than the sum of its proper divisors (269097).

543663 is a wasteful number, since it uses less digits than its factorization.

543663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2115 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 543663 is about 737.3350663030. The cubic root of 543663 is about 81.6162417209.

The spelling of 543663 in words is "five hundred forty-three thousand, six hundred sixty-three".