6647750577466 has 4 divisors (see below), whose sum is σ = 9971625866202. Its totient is φ = 3323875288732.

The previous prime is 6647750577463. The next prime is 6647750577511.

6647750577466 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6583221876841 + 64528700625 = 2565779^2 + 254025^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6647750577395 and 6647750577404.

It is not an unprimeable number, because it can be changed into a prime (6647750577463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1661937644365 + ... + 1661937644368.

Almost surely, 2^{6647750577466} is an apocalyptic number.

6647750577466 is a deficient number, since it is larger than the sum of its proper divisors (3323875288736).

6647750577466 is a wasteful number, since it uses less digits than its factorization.

6647750577466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323875288735.

The product of its (nonzero) digits is 1244678400, while the sum is 70.

The spelling of 6647750577466 in words is "six trillion, six hundred forty-seven billion, seven hundred fifty million, five hundred seventy-seven thousand, four hundred sixty-six".