6487988 has 12 divisors (see below), whose sum is σ = 12227460. Its totient is φ = 2994432.

The previous prime is 6487979. The next prime is 6487991. The reversal of 6487988 is 8897846.

It can be written as a sum of positive squares in 2 ways, for example, as 2439844 + 4048144 = 1562^2 + 2012^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62333 + ... + 62436.

It is an arithmetic number, because the mean of its divisors is an integer number (1018955).

Almost surely, 2^6487988 is an apocalyptic number.

It is an amenable number.

6487988 is a deficient number, since it is larger than the sum of its proper divisors (5739472).

6487988 is a wasteful number, since it uses less digits than its factorization.

6487988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124786 (or 124784 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 6487988 is about 2547.1529204192. The cubic root of 6487988 is about 186.5105256083.

The spelling of 6487988 in words is "six million, four hundred eighty-seven thousand, nine hundred eighty-eight".