6641109 has 20 divisors (see below), whose sum is σ = 10001376. Its totient is φ = 4391496.

The previous prime is 6641083. The next prime is 6641143. The reversal of 6641109 is 9011466.

6641109 is a `hidden beast` number, since 6 + 641 + 10 + 9 = 666.

It is not a de Polignac number, because 6641109 - 2⁵ = 6641077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12952 + ... + 13454.

Almost surely, 2^6641109 is an apocalyptic number.

It is an amenable number.

6641109 is a deficient number, since it is larger than the sum of its proper divisors (3360267).

6641109 is a wasteful number, since it uses less digits than its factorization.

6641109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 6641109 is about 2577.0349240940. The cubic root of 6641109 is about 187.9663909288.

The spelling of 6641109 in words is "six million, six hundred forty-one thousand, one hundred nine".