6466886646 has 16 divisors (see below), whose sum is σ = 14109571008. Its totient is φ = 1959662600.

The previous prime is 6466886633. The next prime is 6466886669.

It is a happy number.

6466886646 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6466886646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48991500 + ... + 48991631.

It is an arithmetic number, because the mean of its divisors is an integer number (881848188).

Almost surely, 2^6466886646 is an apocalyptic number.

6466886646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6466886646 is an abundant number, since it is smaller than the sum of its proper divisors (7642684362).

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

6466886646 is a wasteful number, since it uses less digits than its factorization.

6466886646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97983147.

The product of its digits is 47775744, while the sum is 60.

The square root of 6466886646 is about 80416.9549659772. The cubic root of 6466886646 is about 1863.0810543025.

The spelling of 6466886646 in words is "six billion, four hundred sixty-six million, eight hundred eighty-six thousand, six hundred forty-six".