6464676764646 has 48 divisors (see below), whose sum is σ = 14023826386128. Its totient is φ = 2152273305600.

The previous prime is 6464676764641. The next prime is 6464676764713.

6464676764646 is a `hidden beast` number, since 6 + 4 + 6 + 467 + 67 + 64 + 6 + 46 = 666.

6464676764646 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464676764641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198524206 + ... + 198556766.

It is an arithmetic number, because the mean of its divisors is an integer number (292163049711).

Almost surely, 2^{6464676764646} is an apocalyptic number.

6464676764646 is an abundant number, since it is smaller than the sum of its proper divisors (7559149621482).

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

6464676764646 is a wasteful number, since it uses less digits than its factorization.

6464676764646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45637 (or 45634 counting only the distinct ones).

The product of its digits is 3511517184, while the sum is 72.

The spelling of 6464676764646 in words is "six trillion, four hundred sixty-four billion, six hundred seventy-six million, seven hundred sixty-four thousand, six hundred forty-six".