6487688 has 8 divisors (see below), whose sum is σ = 12164430. Its totient is φ = 3243840.

The previous prime is 6487687. The next prime is 6487751. The reversal of 6487688 is 8867846.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3467044 + 3020644 = 1862^2 + 1738^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6487687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405473 + ... + 405488.

Almost surely, 2^6487688 is an apocalyptic number.

It is an amenable number.

6487688 is a deficient number, since it is larger than the sum of its proper divisors (5676742).

6487688 is a wasteful number, since it uses less digits than its factorization.

6487688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810967 (or 810963 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 6487688 is about 2547.0940304590. The cubic root of 6487688 is about 186.5076508588.

It can be divided in two parts, 648 and 7688, that multiplied together give a square (4981824 = 2232²).

The spelling of 6487688 in words is "six million, four hundred eighty-seven thousand, six hundred eighty-eight".