6489756 has 108 divisors (see below), whose sum is σ = 20623512. Its totient is φ = 1705536.

The previous prime is 6489719. The next prime is 6489779. The reversal of 6489756 is 6579846.

Its product of digits (362880) is a multiple of the sum of its prime factors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22791 + ... + 23073.

Almost surely, 2^6489756 is an apocalyptic number.

It is a pronic number, being equal to 2547×2548.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6489756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10311756).

6489756 is an abundant number, since it is smaller than the sum of its proper divisors (14133756).

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

6489756 is a wasteful number, since it uses less digits than its factorization.

6489756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 308 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 6489756 is about 2547.4999509323. The cubic root of 6489756 is about 186.5274656653.

It can be divided in two parts, 648 and 9756, that added together give a square (10404 = 102²).

The spelling of 6489756 in words is "six million, four hundred eighty-nine thousand, seven hundred fifty-six".