6628566 has 16 divisors (see below), whose sum is σ = 15151104. Its totient is φ = 1893864.

The previous prime is 6628561. The next prime is 6628571. The reversal of 6628566 is 6658266.

It is an interprime number because it is at equal distance from previous prime (6628561) and next prime (6628571).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628561) 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 7 ways as a sum of consecutive naturals, for example, 78870 + ... + 78953.

It is an arithmetic number, because the mean of its divisors is an integer number (946944).

Almost surely, 2^6628566 is an apocalyptic number.

6628566 is an abundant number, since it is smaller than the sum of its proper divisors (8522538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6628566 is a wasteful number, since it uses less digits than its factorization.

6628566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157835.

The product of its digits is 103680, while the sum is 39.

The square root of 6628566 is about 2574.6001631321. The cubic root of 6628566 is about 187.8479795661.

The spelling of 6628566 in words is "six million, six hundred twenty-eight thousand, five hundred sixty-six".