6628446 has 32 divisors (see below), whose sum is σ = 16070400. Its totient is φ = 2008440.

The previous prime is 6628423. The next prime is 6628477. The reversal of 6628446 is 6448266.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6628446.

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 15 ways as a sum of consecutive naturals, for example, 4986 + ... + 6173.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^6628446 is an apocalyptic number.

6628446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6628446 is an abundant number, since it is smaller than the sum of its proper divisors (9441954).

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

6628446 is a wasteful number, since it uses less digits than its factorization.

6628446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11181 (or 11175 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 6628446 is about 2574.5768584371. The cubic root of 6628446 is about 187.8468459929.

The spelling of 6628446 in words is "six million, six hundred twenty-eight thousand, four hundred forty-six".