2000066605 has 4 divisors (see below), whose sum is σ = 2400079932. Its totient is φ = 1600053280.

The previous prime is 2000066603. The next prime is 2000066617. The reversal of 2000066605 is 5066600002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1499470729 + 500595876 = 38723^2 + 22374^2 .

It is not a de Polignac number, because 2000066605 - 2¹ = 2000066603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2000066605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000066603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200006656 + ... + 200006665.

It is an arithmetic number, because the mean of its divisors is an integer number (600019983).

Almost surely, 2^2000066605 is an apocalyptic number.

It is an amenable number.

2000066605 is a deficient number, since it is larger than the sum of its proper divisors (400013327).

2000066605 is an equidigital number, since it uses as much as digits as its factorization.

2000066605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400013326.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2000066605 is about 44722.1042103343. The cubic root of 2000066605 is about 1259.9350359132.

Adding to 2000066605 its reverse (5066600002), we get a palindrome (7066666607).

The spelling of 2000066605 in words is "two billion, sixty-six thousand, six hundred five".