6666226665 has 64 divisors (see below), whose sum is σ = 13273804800. Its totient is φ = 2787450624.

The previous prime is 6666226657. The next prime is 6666226667. The reversal of 6666226665 is 5666226666.

It is not a de Polignac number, because 6666226665 - 2³ = 6666226657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6666226667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 244 + ... + 115466.

It is an arithmetic number, because the mean of its divisors is an integer number (207403200).

Almost surely, 2^6666226665 is an apocalyptic number.

It is an amenable number.

6666226665 is a deficient number, since it is larger than the sum of its proper divisors (6607578135).

6666226665 is a wasteful number, since it uses less digits than its factorization.

6666226665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115286.

The product of its digits is 5598720, while the sum is 51.

The square root of 6666226665 is about 81646.9635993893. The cubic root of 6666226665 is about 1882.0306511090.

Subtracting from 6666226665 its reverse (5666226666), we obtain a palindrome (999999999).

The spelling of 6666226665 in words is "six billion, six hundred sixty-six million, two hundred twenty-six thousand, six hundred sixty-five".