6628147 has 4 divisors (see below), whose sum is σ = 7018056. Its totient is φ = 6238240.

The previous prime is 6628133. The next prime is 6628159. The reversal of 6628147 is 7418266.

6628147 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6628147 - 2¹⁹ = 6103859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6628177) by changing a digit.

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, 194929 + ... + 194962.

It is an arithmetic number, because the mean of its divisors is an integer number (1754514).

Almost surely, 2^6628147 is an apocalyptic number.

6628147 is a deficient number, since it is larger than the sum of its proper divisors (389909).

6628147 is a wasteful number, since it uses less digits than its factorization.

6628147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389908.

The product of its digits is 16128, while the sum is 34.

The square root of 6628147 is about 2574.5187899878. The cubic root of 6628147 is about 187.8440214470.

The spelling of 6628147 in words is "six million, six hundred twenty-eight thousand, one hundred forty-seven".