6642812 has 24 divisors (see below), whose sum is σ = 12980352. Its totient is φ = 2948400.

The previous prime is 6642803. The next prime is 6642817. The reversal of 6642812 is 2182466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137 + ... + 3647.

It is an arithmetic number, because the mean of its divisors is an integer number (540848).

Almost surely, 2^6642812 is an apocalyptic number.

It is an amenable number.

6642812 is a deficient number, since it is larger than the sum of its proper divisors (6337540).

6642812 is a wasteful number, since it uses less digits than its factorization.

6642812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569 (or 3567 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 6642812 is about 2577.3653214087. The cubic root of 6642812 is about 187.9824564888.

The spelling of 6642812 in words is "six million, six hundred forty-two thousand, eight hundred twelve".