6669229666 has 32 divisors (see below), whose sum is σ = 11128622400. Its totient is φ = 2971750080.

The previous prime is 6669229657. The next prime is 6669229667.

It is a happy number.

6669229666 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6669229666.

It is not an unprimeable number, because it can be changed into a prime (6669229667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2364405 + ... + 2367223.

It is an arithmetic number, because the mean of its divisors is an integer number (347769450).

Almost surely, 2^6669229666 is an apocalyptic number.

6669229666 is a deficient number, since it is larger than the sum of its proper divisors (4459392734).

6669229666 is a wasteful number, since it uses less digits than its factorization.

6669229666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914.

The product of its digits is 15116544, while the sum is 58.

The square root of 6669229666 is about 81665.3516860119. The cubic root of 6669229666 is about 1882.3132143320.

The spelling of 6669229666 in words is "six billion, six hundred sixty-nine million, two hundred twenty-nine thousand, six hundred sixty-six".