6487650 has 72 divisors (see below), whose sum is σ = 18787860. Its totient is φ = 1595520.

The previous prime is 6487643. The next prime is 6487667. The reversal of 6487650 is 567846.

It is a happy number.

6487650 is a `hidden beast` number, since 648 + 7 + 6 + 5 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 91809 + 6395841 = 303^2 + 2529^2 .

It is an Ulam 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 35 ways as a sum of consecutive naturals, for example, 5296 + ... + 6404.

Almost surely, 2^6487650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6487650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9393930).

6487650 is an abundant number, since it is smaller than the sum of its proper divisors (12300210).

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

6487650 is a wasteful number, since it uses less digits than its factorization.

6487650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 6487650 is about 2547.0865709669. The cubic root of 6487650 is about 186.5072867175.

The spelling of 6487650 in words is "six million, four hundred eighty-seven thousand, six hundred fifty".