550140666 has 16 divisors (see below), whose sum is σ = 1101743904. Its totient is φ = 183136464.

The previous prime is 550140653. The next prime is 550140673. The reversal of 550140666 is 666041055.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56020 + ... + 65103.

It is an arithmetic number, because the mean of its divisors is an integer number (68858994).

Almost surely, 2^550140666 is an apocalyptic number.

550140666 is an abundant number, since it is smaller than the sum of its proper divisors (551603238).

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

550140666 is a wasteful number, since it uses less digits than its factorization.

550140666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121885.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 550140666 is about 23455.0776165844. The cubic root of 550140666 is about 819.3911135230.

The spelling of 550140666 in words is "five hundred fifty million, one hundred forty thousand, six hundred sixty-six".