500000066 has 16 divisors (see below), whose sum is σ = 753881856. Its totient is φ = 248710176.

The previous prime is 500000057. The next prime is 500000069. The reversal of 500000066 is 660000005.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (500000069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533150 + ... + 534086.

It is an arithmetic number, because the mean of its divisors is an integer number (47117616).

Almost surely, 2^500000066 is an apocalyptic number.

500000066 is a deficient number, since it is larger than the sum of its proper divisors (253881790).

500000066 is a wasteful number, since it uses less digits than its factorization.

500000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 500000066 is about 22360.6812508027. The cubic root of 500000066 is about 793.7005609069.

The spelling of 500000066 in words is "five hundred million, sixty-six", and thus it is an aban number.