549612 has 48 divisors (see below), whose sum is σ = 1630720. Its totient is φ = 156816.

The previous prime is 549607. The next prime is 549623. The reversal of 549612 is 216945.

549612 is a `hidden beast` number, since 5 + 49 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

549612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393 + ... + 1119.

2⁵⁴⁹⁶¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815360).

549612 is an abundant number, since it is smaller than the sum of its proper divisors (1081108).

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

549612 is a wasteful number, since it uses less digits than its factorization.

549612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 739 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 549612 is about 741.3582130118. The cubic root of 549612 is about 81.9128560639.

The spelling of 549612 in words is "five hundred forty-nine thousand, six hundred twelve".