6646170680 has 16 divisors (see below), whose sum is σ = 14953884120. Its totient is φ = 2658468256.

The previous prime is 6646170673. The next prime is 6646170703. The reversal of 6646170680 is 860716466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83077094 + ... + 83077173.

Almost surely, 2^6646170680 is an apocalyptic number.

It is an amenable number.

6646170680 is an abundant number, since it is smaller than the sum of its proper divisors (8307713440).

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

6646170680 is a wasteful number, since it uses less digits than its factorization.

6646170680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166154278 (or 166154274 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 6646170680 is about 81524.0497031397. The cubic root of 6646170680 is about 1880.1413316112.

The spelling of 6646170680 in words is "six billion, six hundred forty-six million, one hundred seventy thousand, six hundred eighty".