6645775466 has 16 divisors (see below), whose sum is σ = 11106288000. Its totient is φ = 2956534080.

The previous prime is 6645775429. The next prime is 6645775471.

6645775466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3212591 + ... + 3214658.

It is an arithmetic number, because the mean of its divisors is an integer number (694143000).

Almost surely, 2^6645775466 is an apocalyptic number.

6645775466 is a deficient number, since it is larger than the sum of its proper divisors (4460512534).

6645775466 is a wasteful number, since it uses less digits than its factorization.

6645775466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427309.

The product of its digits is 25401600, while the sum is 56.

The square root of 6645775466 is about 81521.6257566052. The cubic root of 6645775466 is about 1880.1040633886.

The spelling of 6645775466 in words is "six billion, six hundred forty-five million, seven hundred seventy-five thousand, four hundred sixty-six".