6786621272 has 32 divisors (see below), whose sum is σ = 13480337520. Its totient is φ = 3192069120.

The previous prime is 6786621271. The next prime is 6786621299. The reversal of 6786621272 is 2721266876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6786621271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278108 + ... + 301524.

Almost surely, 2^6786621272 is an apocalyptic number.

It is an amenable number.

6786621272 is a deficient number, since it is larger than the sum of its proper divisors (6693716248).

6786621272 is a wasteful number, since it uses less digits than its factorization.

6786621272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25571 (or 25567 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 6786621272 is about 82380.9521187999. The cubic root of 6786621272 is about 1893.2931837295.

The spelling of 6786621272 in words is "six billion, seven hundred eighty-six million, six hundred twenty-one thousand, two hundred seventy-two".