6459856 has 30 divisors (see below), whose sum is σ = 13558470. Its totient is φ = 2980224.

The previous prime is 6459841. The next prime is 6459863. The reversal of 6459856 is 6589546.

It can be written as a sum of positive squares in 3 ways, for example, as 129600 + 6330256 = 360^2 + 2516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1510 + ... + 3898.

It is an arithmetic number, because the mean of its divisors is an integer number (451949).

Almost surely, 2^6459856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6459856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6779235).

6459856 is an abundant number, since it is smaller than the sum of its proper divisors (7098614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6459856 is a wasteful number, since it uses less digits than its factorization.

6459856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2404 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 6459856 is about 2541.6246772488. The cubic root of 6459856 is about 186.2405643614.

It can be divided in two parts, 645 and 9856, that added together give a palindrome (10501).

The spelling of 6459856 in words is "six million, four hundred fifty-nine thousand, eight hundred fifty-six".