6598391 has 4 divisors (see below), whose sum is σ = 6604800. Its totient is φ = 6591984.

The previous prime is 6598387. The next prime is 6598411. The reversal of 6598391 is 1938956.

6598391 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6598391 - 2² = 6598387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6588391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271 + ... + 3848.

It is an arithmetic number, because the mean of its divisors is an integer number (1651200).

Almost surely, 2^6598391 is an apocalyptic number.

6598391 is a deficient number, since it is larger than the sum of its proper divisors (6409).

6598391 is a wasteful number, since it uses less digits than its factorization.

6598391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408.

The product of its digits is 58320, while the sum is 41.

The square root of 6598391 is about 2568.7333454448. The cubic root of 6598391 is about 187.5625012376.

The spelling of 6598391 in words is "six million, five hundred ninety-eight thousand, three hundred ninety-one".