543966 has 16 divisors (see below), whose sum is σ = 1152144. Its totient is φ = 170624.

The previous prime is 543929. The next prime is 543967. The reversal of 543966 is 669345.

It is a happy number.

543966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 543966.

It is not an unprimeable number, because it can be changed into a prime (543967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565 + ... + 2768.

It is an arithmetic number, because the mean of its divisors is an integer number (72009).

2⁵⁴³⁹⁶⁶ is an apocalyptic number.

543966 is an abundant number, since it is smaller than the sum of its proper divisors (608178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

543966 is a wasteful number, since it uses less digits than its factorization.

543966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355.

The product of its digits is 19440, while the sum is 33.

The square root of 543966 is about 737.5405073621. The cubic root of 543966 is about 81.6314013133.

The spelling of 543966 in words is "five hundred forty-three thousand, nine hundred sixty-six".