539966 has 8 divisors (see below), whose sum is σ = 925680. Its totient is φ = 231408.

The previous prime is 539947. The next prime is 539993. The reversal of 539966 is 669935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 5 + 3¹² + 9 + 9³ + 6 + 6⁵ .

It is a Curzon 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 539966.

It is an unprimeable number.

539966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 19271 + ... + 19298.

It is an arithmetic number, because the mean of its divisors is an integer number (115710).

2⁵³⁹⁹⁶⁶ is an apocalyptic number.

539966 is a deficient number, since it is larger than the sum of its proper divisors (385714).

539966 is a wasteful number, since it uses less digits than its factorization.

539966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38578.

The product of its digits is 43740, while the sum is 38.

The square root of 539966 is about 734.8237884010. The cubic root of 539966 is about 81.4308193842.

The spelling of 539966 in words is "five hundred thirty-nine thousand, nine hundred sixty-six".