6625566 has 24 divisors (see below), whose sum is σ = 15111720. Its totient is φ = 2092176.

The previous prime is 6625519. The next prime is 6625571. The reversal of 6625566 is 6655266.

It is a self number, because there is not a number n which added to its sum of digits gives 6625566.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9345 + ... + 10028.

It is an arithmetic number, because the mean of its divisors is an integer number (629655).

Almost surely, 2^6625566 is an apocalyptic number.

6625566 is an abundant number, since it is smaller than the sum of its proper divisors (8486154).

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

6625566 is a wasteful number, since it uses less digits than its factorization.

6625566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19400 (or 19397 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 6625566 is about 2574.0174824581. The cubic root of 6625566 is about 187.8196361317.

The spelling of 6625566 in words is "six million, six hundred twenty-five thousand, five hundred sixty-six".