6642664982 has 8 divisors (see below), whose sum is σ = 10233294816. Its totient is φ = 3231566712.

The previous prime is 6642664981. The next prime is 6642665129. The reversal of 6642664982 is 2894662466.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642664981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44882798 + ... + 44882945.

It is an arithmetic number, because the mean of its divisors is an integer number (1279161852).

Almost surely, 2^6642664982 is an apocalyptic number.

6642664982 is a deficient number, since it is larger than the sum of its proper divisors (3590629834).

6642664982 is a wasteful number, since it uses less digits than its factorization.

6642664982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89765782.

The product of its digits is 5971968, while the sum is 53.

The square root of 6642664982 is about 81502.5458620772. The cubic root of 6642664982 is about 1879.8106967607.

The spelling of 6642664982 in words is "six billion, six hundred forty-two million, six hundred sixty-four thousand, nine hundred eighty-two".