550338666 has 32 divisors (see below), whose sum is σ = 1149612480. Its totient is φ = 175458816.

The previous prime is 550338661. The next prime is 550338673. The reversal of 550338666 is 666833055.

It is not an unprimeable number, because it can be changed into a prime (550338661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7911 + ... + 34106.

It is an arithmetic number, because the mean of its divisors is an integer number (35925390).

Almost surely, 2^550338666 is an apocalyptic number.

550338666 is an abundant number, since it is smaller than the sum of its proper divisors (599273814).

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

550338666 is a wasteful number, since it uses less digits than its factorization.

550338666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42118.

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 550338666 is about 23459.2980713405. The cubic root of 550338666 is about 819.4894035245.

The spelling of 550338666 in words is "five hundred fifty million, three hundred thirty-eight thousand, six hundred sixty-six".