549066 has 32 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 147456.

The previous prime is 549037. The next prime is 549071. The reversal of 549066 is 660945.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549066.

It is an unprimeable number.

549066 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 (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330 + ... + 1098.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2⁵⁴⁹⁰⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665280).

549066 is an abundant number, since it is smaller than the sum of its proper divisors (781494).

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

549066 is a wasteful number, since it uses less digits than its factorization.

549066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 549066 is about 740.9898784734. The cubic root of 549066 is about 81.8857222327.

The spelling of 549066 in words is "five hundred forty-nine thousand, sixty-six".