6648668466 has 32 divisors (see below), whose sum is σ = 15136892928. Its totient is φ = 1927149840.

The previous prime is 6648668449. The next prime is 6648668479.

It is a happy number.

6648668466 is nontrivially palindromic in base 10.

6648668466 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2188426 + ... + 2191461.

It is an arithmetic number, because the mean of its divisors is an integer number (473027904).

Almost surely, 2^6648668466 is an apocalyptic number.

6648668466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6648668466 is an abundant number, since it is smaller than the sum of its proper divisors (8488224462).

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

6648668466 is a wasteful number, since it uses less digits than its factorization.

6648668466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379926.

The product of its digits is 47775744, while the sum is 60.

The square root of 6648668466 is about 81539.3675840082. The cubic root of 6648668466 is about 1880.3768357701.

The spelling of 6648668466 in words is "six billion, six hundred forty-eight million, six hundred sixty-eight thousand, four hundred sixty-six".