6699009966 has 16 divisors (see below), whose sum is σ = 14616021888. Its totient is φ = 2030003000.

The previous prime is 6699009959. The next prime is 6699009983.

6699009966 is nontrivially palindromic in base 10.

6699009966 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50750010 + ... + 50750141.

It is an arithmetic number, because the mean of its divisors is an integer number (913501368).

Almost surely, 2^6699009966 is an apocalyptic number.

6699009966 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6699009966 is an abundant number, since it is smaller than the sum of its proper divisors (7917011922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6699009966 is a wasteful number, since it uses less digits than its factorization.

6699009966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101500167.

The product of its (nonzero) digits is 8503056, while the sum is 60.

The square root of 6699009966 is about 81847.4799001167. The cubic root of 6699009966 is about 1885.1107699449.

The spelling of 6699009966 in words is "six billion, six hundred ninety-nine million, nine thousand, nine hundred sixty-six".