6647075 has 6 divisors (see below), whose sum is σ = 8242404. Its totient is φ = 5317640.

The previous prime is 6647059. The next prime is 6647077. The reversal of 6647075 is 5707466.

It is not a de Polignac number, because 6647075 - 2⁴ = 6647059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6647077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132917 + ... + 132966.

It is an arithmetic number, because the mean of its divisors is an integer number (1373734).

Almost surely, 2^6647075 is an apocalyptic number.

6647075 is a deficient number, since it is larger than the sum of its proper divisors (1595329).

6647075 is a wasteful number, since it uses less digits than its factorization.

6647075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265893 (or 265888 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 6647075 is about 2578.1921960940. The cubic root of 6647075 is about 188.0226602382.

The spelling of 6647075 in words is "six million, six hundred forty-seven thousand, seventy-five".