550664 has 16 divisors (see below), whose sum is σ = 1093500. Its totient is φ = 259072.

The previous prime is 550663. The next prime is 550679. The reversal of 550664 is 466055.

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 100 = 742^2 + 10^2 .

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 3 ways as a sum of consecutive naturals, for example, 1889 + ... + 2160.

2⁵⁵⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

550664 is a deficient number, since it is larger than the sum of its proper divisors (542836).

550664 is a wasteful number, since it uses less digits than its factorization.

550664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072 (or 4068 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 550664 is about 742.0673823852. The cubic root of 550664 is about 81.9650852746.

The spelling of 550664 in words is "five hundred fifty thousand, six hundred sixty-four".