6641199 has 12 divisors (see below), whose sum is σ = 9637056. Its totient is φ = 4407072.

The previous prime is 6641197. The next prime is 6641231. The reversal of 6641199 is 9911466.

6641199 is a `hidden beast` number, since 6 + 641 + 1 + 9 + 9 = 666.

It is not a de Polignac number, because 6641199 - 2¹ = 6641197 is a prime.

6641199 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641197) 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 11 ways as a sum of consecutive naturals, for example, 514 + ... + 3680.

It is an arithmetic number, because the mean of its divisors is an integer number (803088).

Almost surely, 2^6641199 is an apocalyptic number.

6641199 is a deficient number, since it is larger than the sum of its proper divisors (2995857).

6641199 is a wasteful number, since it uses less digits than its factorization.

6641199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406 (or 3403 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 6641199 is about 2577.0523859635. The cubic root of 6641199 is about 187.9672400289.

It can be divided in two parts, 664119 and 9, that added together give a triangular number (664128 = T₁₁₅₂).

The spelling of 6641199 in words is "six million, six hundred forty-one thousand, one hundred ninety-nine".