6628189 has 2 divisors, whose sum is σ = 6628190. Its totient is φ = 6628188.

The previous prime is 6628177. The next prime is 6628201. The reversal of 6628189 is 9818266.

It is a balanced prime because it is at equal distance from previous prime (6628177) and next prime (6628201).

It can be written as a sum of positive squares in only one way, i.e., 5212089 + 1416100 = 2283^2 + 1190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6628189 is a prime.

It is a super-3 number, since 3×6628189³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6628159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314094 + 3314095.

It is an arithmetic number, because the mean of its divisors is an integer number (3314095).

Almost surely, 2^6628189 is an apocalyptic number.

It is an amenable number.

6628189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628189 is an equidigital number, since it uses as much as digits as its factorization.

6628189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 6628189 is about 2574.5269468390. The cubic root of 6628189 is about 187.8444182111.

The spelling of 6628189 in words is "six million, six hundred twenty-eight thousand, one hundred eighty-nine".