6630855 has 32 divisors (see below), whose sum is σ = 13229568. Its totient is φ = 2755200.

The previous prime is 6630853. The next prime is 6630859. The reversal of 6630855 is 5580366.

It is not a de Polignac number, because 6630855 - 2¹ = 6630853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6630851) 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 31 ways as a sum of consecutive naturals, for example, 1716 + ... + 4025.

It is an arithmetic number, because the mean of its divisors is an integer number (413424).

Almost surely, 2^6630855 is an apocalyptic number.

6630855 is a deficient number, since it is larger than the sum of its proper divisors (6598713).

6630855 is a wasteful number, since it uses less digits than its factorization.

6630855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 6630855 is about 2575.0446598069. The cubic root of 6630855 is about 187.8695998552.

Adding to 6630855 its reverse (5580366), we get a palindrome (12211221).

The spelling of 6630855 in words is "six million, six hundred thirty thousand, eight hundred fifty-five".