6489784320 has 120 divisors (see below), whose sum is σ = 20767462464. Its totient is φ = 1730543616.

The previous prime is 6489784283. The next prime is 6489784361. The reversal of 6489784320 is 234879846.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232557 + ... + 258963.

Almost surely, 2^6489784320 is an apocalyptic number.

6489784320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6489784320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10383731232).

6489784320 is an abundant number, since it is smaller than the sum of its proper divisors (14277678144).

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

6489784320 is an equidigital number, since it uses as much as digits as its factorization.

6489784320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26443 (or 26417 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 6489784320 is about 80559.1976126873. The cubic root of 6489784320 is about 1865.2773698781.

The spelling of 6489784320 in words is "six billion, four hundred eighty-nine million, seven hundred eighty-four thousand, three hundred twenty".