6481839 has 16 divisors (see below), whose sum is σ = 10637312. Its totient is φ = 3418848.

The previous prime is 6481829. The next prime is 6481841. The reversal of 6481839 is 9381846.

It is not a de Polignac number, because 6481839 - 2⁴ = 6481823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

6481839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6481797 and 6481806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11599 + ... + 12144.

It is an arithmetic number, because the mean of its divisors is an integer number (664832).

Almost surely, 2^6481839 is an apocalyptic number.

6481839 is a deficient number, since it is larger than the sum of its proper divisors (4155473).

6481839 is a wasteful number, since it uses less digits than its factorization.

6481839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23766.

The product of its digits is 41472, while the sum is 39.

The square root of 6481839 is about 2545.9456003615. The cubic root of 6481839 is about 186.4515851106.

Subtracting from 6481839 its sum of digits (39), we obtain a triangular number (6481800 = T₃₆₀₀).

The spelling of 6481839 in words is "six million, four hundred eighty-one thousand, eight hundred thirty-nine".