6487004640 has 192 divisors, whose sum is σ = 21416596992. Its totient is φ = 1647360000.

The previous prime is 6487004633. The next prime is 6487004683. The reversal of 6487004640 is 464007846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2769870 + ... + 2772210.

It is an arithmetic number, because the mean of its divisors is an integer number (111544776).

Almost surely, 2^6487004640 is an apocalyptic number.

6487004640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6487004640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10708298496).

6487004640 is an abundant number, since it is smaller than the sum of its proper divisors (14929592352).

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

6487004640 is a wasteful number, since it uses less digits than its factorization.

6487004640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633 (or 2625 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 6487004640 is about 80541.9433587246. The cubic root of 6487004640 is about 1865.0110223194.

The spelling of 6487004640 in words is "six billion, four hundred eighty-seven million, four thousand, six hundred forty".