6486740 has 48 divisors (see below), whose sum is σ = 14946960. Its totient is φ = 2350080.

The previous prime is 6486737. The next prime is 6486751. The reversal of 6486740 is 476846.

It can be written as a sum of positive squares in 8 ways, for example, as 659344 + 5827396 = 812^2 + 2414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6486740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15656 + ... + 16064.

It is an arithmetic number, because the mean of its divisors is an integer number (311395).

Almost surely, 2^6486740 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 6486740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7473480).

6486740 is an abundant number, since it is smaller than the sum of its proper divisors (8460220).

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

6486740 is a wasteful number, since it uses less digits than its factorization.

6486740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 6486740 is about 2546.9079292350. The cubic root of 6486740 is about 186.4985660679.

The spelling of 6486740 in words is "six million, four hundred eighty-six thousand, seven hundred forty".