6704391 has 4 divisors (see below), whose sum is σ = 8939192. Its totient is φ = 4469592.

The previous prime is 6704377. The next prime is 6704413. The reversal of 6704391 is 1934076.

It is a happy number.

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

It is not a de Polignac number, because 6704391 - 2¹¹ = 6702343 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6704791) 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, 1117396 + ... + 1117401.

It is an arithmetic number, because the mean of its divisors is an integer number (2234798).

Almost surely, 2^6704391 is an apocalyptic number.

6704391 is a deficient number, since it is larger than the sum of its proper divisors (2234801).

6704391 is a wasteful number, since it uses less digits than its factorization.

6704391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234800.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 6704391 is about 2589.2838778319. The cubic root of 6704391 is about 188.5615378356.

The spelling of 6704391 in words is "six million, seven hundred four thousand, three hundred ninety-one".