549680 has 20 divisors (see below), whose sum is σ = 1278192. Its totient is φ = 219840.

The previous prime is 549667. The next prime is 549683. The reversal of 549680 is 86945.

It is a tau number, because it is divible by the number of its divisors (20).

It is a nialpdrome in base 16.

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

549680 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 3 ways as a sum of consecutive naturals, for example, 3356 + ... + 3515.

2⁵⁴⁹⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

549680 is an abundant number, since it is smaller than the sum of its proper divisors (728512).

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

549680 is a wasteful number, since it uses less digits than its factorization.

549680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884 (or 6878 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 549680 is about 741.4040733635. The cubic root of 549680 is about 81.9162341103.

The spelling of 549680 in words is "five hundred forty-nine thousand, six hundred eighty".