6487656 has 96 divisors (see below), whose sum is σ = 19642560. Its totient is φ = 1748736.

The previous prime is 6487643. The next prime is 6487667. The reversal of 6487656 is 6567846.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (241920) is a multiple of the sum of its prime divisors (108).

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 23 ways as a sum of consecutive naturals, for example, 88836 + ... + 88908.

It is an arithmetic number, because the mean of its divisors is an integer number (204610).

Almost surely, 2^6487656 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 6487656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9821280).

6487656 is an abundant number, since it is smaller than the sum of its proper divisors (13154904).

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

6487656 is a wasteful number, since it uses less digits than its factorization.

6487656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 108 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 6487656 is about 2547.0877487829. The cubic root of 6487656 is about 186.5073442136.

The spelling of 6487656 in words is "six million, four hundred eighty-seven thousand, six hundred fifty-six".