549688 has 8 divisors (see below), whose sum is σ = 1030680. Its totient is φ = 274840.

The previous prime is 549683. The next prime is 549691. The reversal of 549688 is 886945.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 549688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549683) by changing a digit.

549688 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 as a sum of consecutive naturals, namely, 34348 + ... + 34363.

It is an arithmetic number, because the mean of its divisors is an integer number (128835).

2⁵⁴⁹⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

549688 is a deficient number, since it is larger than the sum of its proper divisors (480992).

549688 is a wasteful number, since it uses less digits than its factorization.

549688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68717 (or 68713 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 549688 is about 741.4094685125. The cubic root of 549688 is about 81.9166315092.

The spelling of 549688 in words is "five hundred forty-nine thousand, six hundred eighty-eight".