6627645 has 24 divisors (see below), whose sum is σ = 11860992. Its totient is φ = 3420000.

The previous prime is 6627629. The next prime is 6627661. The reversal of 6627645 is 5467266.

6627645 is a `hidden beast` number, since 6 + 6 + 2 + 7 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (6627629) and next prime (6627661).

It is not a de Polignac number, because 6627645 - 2⁴ = 6627629 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 981 + ... + 3770.

It is an arithmetic number, because the mean of its divisors is an integer number (494208).

Almost surely, 2^6627645 is an apocalyptic number.

It is an amenable number.

6627645 is a deficient number, since it is larger than the sum of its proper divisors (5233347).

6627645 is a wasteful number, since it uses less digits than its factorization.

6627645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793 (or 4790 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 6627645 is about 2574.4212941941. The cubic root of 6627645 is about 187.8392790416.

The spelling of 6627645 in words is "six million, six hundred twenty-seven thousand, six hundred forty-five".