6628885 has 8 divisors (see below), whose sum is σ = 8211456. Its totient is φ = 5131920.

The previous prime is 6628879. The next prime is 6628943. The reversal of 6628885 is 5888266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6628885 - 2³ = 6628877 is a prime.

It is a Duffinian number.

6628885 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21229 + ... + 21538.

It is an arithmetic number, because the mean of its divisors is an integer number (1026432).

Almost surely, 2^6628885 is an apocalyptic number.

It is an amenable number.

6628885 is a deficient number, since it is larger than the sum of its proper divisors (1582571).

6628885 is a wasteful number, since it uses less digits than its factorization.

6628885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42803.

The product of its digits is 184320, while the sum is 43.

The square root of 6628885 is about 2574.6621137540. The cubic root of 6628885 is about 187.8509929149.

The spelling of 6628885 in words is "six million, six hundred twenty-eight thousand, eight hundred eighty-five".