6480839 has 4 divisors (see below), whose sum is σ = 6486000. Its totient is φ = 6475680.

The previous prime is 6480827. The next prime is 6480869. The reversal of 6480839 is 9380846.

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 6480839 - 2¹⁶ = 6415303 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 (6480869) 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 3 ways as a sum of consecutive naturals, for example, 662 + ... + 3660.

It is an arithmetic number, because the mean of its divisors is an integer number (1621500).

Almost surely, 2^6480839 is an apocalyptic number.

6480839 is a deficient number, since it is larger than the sum of its proper divisors (5161).

6480839 is a wasteful number, since it uses less digits than its factorization.

6480839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 6480839 is about 2545.7492021014. The cubic root of 6480839 is about 186.4419962077.

The spelling of 6480839 in words is "six million, four hundred eighty thousand, eight hundred thirty-nine".