2666331005 has 16 divisors (see below), whose sum is σ = 3595536000. Its totient is φ = 1883373888.

The previous prime is 2666330999. The next prime is 2666331007. The reversal of 2666331005 is 5001336662.

It is a cyclic number.

It is not a de Polignac number, because 2666331005 - 2⁶ = 2666330941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666331007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 890255 + ... + 893244.

It is an arithmetic number, because the mean of its divisors is an integer number (224721000).

Almost surely, 2^2666331005 is an apocalyptic number.

It is an amenable number.

2666331005 is a deficient number, since it is larger than the sum of its proper divisors (929204995).

2666331005 is a wasteful number, since it uses less digits than its factorization.

2666331005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783540.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 2666331005 is about 51636.5278170405. The cubic root of 2666331005 is about 1386.6643625596.

Adding to 2666331005 its reverse (5001336662), we get a palindrome (7667667667).

The spelling of 2666331005 in words is "two billion, six hundred sixty-six million, three hundred thirty-one thousand, five".