6489856 has 36 divisors (see below), whose sum is σ = 13134744. Its totient is φ = 3200000.

The previous prime is 6489839. The next prime is 6489859. The reversal of 6489856 is 6589846.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25731 + ... + 25981.

It is an arithmetic number, because the mean of its divisors is an integer number (364854).

Almost surely, 2^6489856 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 6489856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6567372).

6489856 is an abundant number, since it is smaller than the sum of its proper divisors (6644888).

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

6489856 is a wasteful number, since it uses less digits than its factorization.

6489856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 354 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 6489856 is about 2547.5195779424. The cubic root of 6489856 is about 186.5284237214.

The spelling of 6489856 in words is "six million, four hundred eighty-nine thousand, eight hundred fifty-six".