550660 has 24 divisors (see below), whose sum is σ = 1262016. Its totient is φ = 200160.

The previous prime is 550657. The next prime is 550661. The reversal of 550660 is 66055.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (550661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 1471.

It is an arithmetic number, because the mean of its divisors is an integer number (52584).

2⁵⁵⁰⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

550660 is an abundant number, since it is smaller than the sum of its proper divisors (711356).

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

550660 is a wasteful number, since it uses less digits than its factorization.

550660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523 (or 2521 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 550660 is about 742.0646872073. The cubic root of 550660 is about 81.9648868105.

The spelling of 550660 in words is "five hundred fifty thousand, six hundred sixty".