2806660805 has 16 divisors (see below), whose sum is σ = 3628377984. Its totient is φ = 2071863360.

The previous prime is 2806660793. The next prime is 2806660807. The reversal of 2806660805 is 5080666082.

It is not a de Polignac number, because 2806660805 - 2³⁰ = 1732918981 is a prime.

It is a super-3 number, since 3×2806660805³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2806660807) 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 15 ways as a sum of consecutive naturals, for example, 228470 + ... + 240440.

It is an arithmetic number, because the mean of its divisors is an integer number (226773624).

Almost surely, 2^2806660805 is an apocalyptic number.

It is an amenable number.

2806660805 is a deficient number, since it is larger than the sum of its proper divisors (821717179).

2806660805 is a wasteful number, since it uses less digits than its factorization.

2806660805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15596.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 2806660805 is about 52977.9275264709. The cubic root of 2806660805 is about 1410.5764966509.

The spelling of 2806660805 in words is "two billion, eight hundred six million, six hundred sixty thousand, eight hundred five".