6627945 has 16 divisors (see below), whose sum is σ = 10688832. Its totient is φ = 3506880.

The previous prime is 6627917. The next prime is 6627949. The reversal of 6627945 is 5497266.

It is not a de Polignac number, because 6627945 - 2¹⁵ = 6595177 is a prime.

6627945 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6627949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (668052).

Almost surely, 2^6627945 is an apocalyptic number.

It is an amenable number.

6627945 is a deficient number, since it is larger than the sum of its proper divisors (4060887).

6627945 is a wasteful number, since it uses less digits than its factorization.

6627945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512.

The product of its digits is 90720, while the sum is 39.

The square root of 6627945 is about 2574.4795590565. The cubic root of 6627945 is about 187.8421131772.

The spelling of 6627945 in words is "six million, six hundred twenty-seven thousand, nine hundred forty-five".