6601109 has 6 divisors (see below), whose sum is σ = 6821910. Its totient is φ = 6387240.

The previous prime is 6601093. The next prime is 6601129. The reversal of 6601109 is 9011066.

It can be written as a sum of positive squares in only one way, i.e., 3694084 + 2907025 = 1922^2 + 1705^2 .

It is not a de Polignac number, because 6601109 - 2⁴ = 6601093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601129) 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, 2474 + ... + 4395.

It is an arithmetic number, because the mean of its divisors is an integer number (1136985).

Almost surely, 2^6601109 is an apocalyptic number.

It is an amenable number.

6601109 is a deficient number, since it is larger than the sum of its proper divisors (220801).

6601109 is an equidigital number, since it uses as much as digits as its factorization.

6601109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931 (or 6900 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 6601109 is about 2569.2623454992. The cubic root of 6601109 is about 187.5882511968.

The spelling of 6601109 in words is "six million, six hundred one thousand, one hundred nine".