6646776466 has 8 divisors (see below), whose sum is σ = 10876543344. Its totient is φ = 3021262020.

The previous prime is 6646776443. The next prime is 6646776497.

6646776466 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6646776466.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151063080 + ... + 151063123.

It is an arithmetic number, because the mean of its divisors is an integer number (1359567918).

Almost surely, 2^6646776466 is an apocalyptic number.

6646776466 is a deficient number, since it is larger than the sum of its proper divisors (4229766878).

6646776466 is a wasteful number, since it uses less digits than its factorization.

6646776466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302126216.

The product of its digits is 36578304, while the sum is 58.

The square root of 6646776466 is about 81527.7650006426. The cubic root of 6646776466 is about 1880.1984536618.

The spelling of 6646776466 in words is "six billion, six hundred forty-six million, seven hundred seventy-six thousand, four hundred sixty-six".