6546691328 has 36 divisors (see below), whose sum is σ = 13082499360. Its totient is φ = 3269666304.

The previous prime is 6546691301. The next prime is 6546691343. The reversal of 6546691328 is 8231966456.

It is a super-2 number, since 2×6546691328² = 85718334688220807168, which contains 22 as substring.

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, 221351 + ... + 249177.

It is an arithmetic number, because the mean of its divisors is an integer number (363402760).

Almost surely, 2^6546691328 is an apocalyptic number.

It is an amenable number.

6546691328 is a deficient number, since it is larger than the sum of its proper divisors (6535808032).

6546691328 is an equidigital number, since it uses as much as digits as its factorization.

6546691328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28762 (or 28748 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 6546691328 is about 80911.6266552589. The cubic root of 6546691328 is about 1870.7135340266.

The spelling of 6546691328 in words is "six billion, five hundred forty-six million, six hundred ninety-one thousand, three hundred twenty-eight".