6551787328 has 28 divisors (see below), whose sum is σ = 13685479360. Its totient is φ = 3103477632.

The previous prime is 6551787317. The next prime is 6551787353. The reversal of 6551787328 is 8237871556.

It is a happy number.

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, 2692776 + ... + 2695207.

It is an arithmetic number, because the mean of its divisors is an integer number (488767120).

Almost surely, 2^6551787328 is an apocalyptic number.

It is an amenable number.

6551787328 is an abundant number, since it is smaller than the sum of its proper divisors (7133692032).

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

6551787328 is a wasteful number, since it uses less digits than its factorization.

6551787328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388014 (or 5388004 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The square root of 6551787328 is about 80943.1116772762. Note that the first 3 decimals coincide. The cubic root of 6551787328 is about 1871.1988012248.

The spelling of 6551787328 in words is "six billion, five hundred fifty-one million, seven hundred eighty-seven thousand, three hundred twenty-eight".