550165666 has 16 divisors (see below), whose sum is σ = 836920224. Its totient is φ = 271206144.

The previous prime is 550165639. The next prime is 550165673. The reversal of 550165666 is 666561055.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83650 + ... + 89986.

It is an arithmetic number, because the mean of its divisors is an integer number (52307514).

Almost surely, 2^550165666 is an apocalyptic number.

550165666 is a deficient number, since it is larger than the sum of its proper divisors (286754558).

550165666 is a wasteful number, since it uses less digits than its factorization.

550165666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 550165666 is about 23455.6105441747. The cubic root of 550165666 is about 819.4035251775.

The spelling of 550165666 in words is "five hundred fifty million, one hundred sixty-five thousand, six hundred sixty-six".