6628895 has 32 divisors (see below), whose sum is σ = 10378368. Its totient is φ = 3944448.

The previous prime is 6628879. The next prime is 6628943. The reversal of 6628895 is 5988266.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6628895 - 2⁴ = 6628879 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7307 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (324324).

Almost surely, 2^6628895 is an apocalyptic number.

6628895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6628895 is a deficient number, since it is larger than the sum of its proper divisors (3749473).

6628895 is a wasteful number, since it uses less digits than its factorization.

6628895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its digits is 207360, while the sum is 44.

The square root of 6628895 is about 2574.6640557556. The cubic root of 6628895 is about 187.8510873757.

The spelling of 6628895 in words is "six million, six hundred twenty-eight thousand, eight hundred ninety-five".