6598409 has 4 divisors (see below), whose sum is σ = 6656916. Its totient is φ = 6539904.

The previous prime is 6598387. The next prime is 6598411. The reversal of 6598409 is 9048956.

6598409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 5953600 = 803^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 6598409 - 2⁸ = 6598153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6598429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29084 + ... + 29309.

It is an arithmetic number, because the mean of its divisors is an integer number (1664229).

Almost surely, 2^6598409 is an apocalyptic number.

It is an amenable number.

6598409 is a deficient number, since it is larger than the sum of its proper divisors (58507).

6598409 is a wasteful number, since it uses less digits than its factorization.

6598409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58506.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 6598409 is about 2568.7368491148. The cubic root of 6598409 is about 187.5626717904.

It can be divided in two parts, 6598 and 409, that added together give a palindrome (7007).

The spelling of 6598409 in words is "six million, five hundred ninety-eight thousand, four hundred nine".