6646336466 has 32 divisors (see below), whose sum is σ = 12527419392. Its totient is φ = 2569084560.

The previous prime is 6646336457. The next prime is 6646336511.

6646336466 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150356 + ... + 189471.

It is an arithmetic number, because the mean of its divisors is an integer number (391481856).

Almost surely, 2^6646336466 is an apocalyptic number.

6646336466 is a deficient number, since it is larger than the sum of its proper divisors (5881082926).

6646336466 is a wasteful number, since it uses less digits than its factorization.

6646336466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339974.

The product of its digits is 6718464, while the sum is 50.

The square root of 6646336466 is about 81525.0664887800. The cubic root of 6646336466 is about 1880.1569645992.

The spelling of 6646336466 in words is "six billion, six hundred forty-six million, three hundred thirty-six thousand, four hundred sixty-six".