6628135 has 4 divisors (see below), whose sum is σ = 7953768. Its totient is φ = 5302504.

The previous prime is 6628133. The next prime is 6628159. The reversal of 6628135 is 5318266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5318266 = 2 ⋅2659133.

It is a cyclic number.

It is not a de Polignac number, because 6628135 - 2¹ = 6628133 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6628097 and 6628106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628133) 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, 662809 + ... + 662818.

It is an arithmetic number, because the mean of its divisors is an integer number (1988442).

Almost surely, 2^6628135 is an apocalyptic number.

6628135 is a deficient number, since it is larger than the sum of its proper divisors (1325633).

6628135 is a wasteful number, since it uses less digits than its factorization.

6628135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325632.

The product of its digits is 8640, while the sum is 31.

The square root of 6628135 is about 2574.5164594541. The cubic root of 6628135 is about 187.8439080855.

The spelling of 6628135 in words is "six million, six hundred twenty-eight thousand, one hundred thirty-five".