549663 has 8 divisors (see below), whose sum is σ = 746928. Its totient is φ = 359424.

The previous prime is 549649. The next prime is 549667. The reversal of 549663 is 366945.

It is a happy number.

549663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-549663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549667) 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, 1570 + ... + 1887.

It is an arithmetic number, because the mean of its divisors is an integer number (93366).

2⁵⁴⁹⁶⁶³ is an apocalyptic number.

549663 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

549663 is a deficient number, since it is larger than the sum of its proper divisors (197265).

549663 is a wasteful number, since it uses less digits than its factorization.

549663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513.

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

The square root of 549663 is about 741.3926085415. The cubic root of 549663 is about 81.9153896249.

The spelling of 549663 in words is "five hundred forty-nine thousand, six hundred sixty-three".