6662719272 has 64 divisors (see below), whose sum is σ = 18189619200. Its totient is φ = 2016943040.

The previous prime is 6662719267. The next prime is 6662719279. The reversal of 6662719272 is 2729172666.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6662719279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256633 + ... + 281399.

It is an arithmetic number, because the mean of its divisors is an integer number (284212800).

Almost surely, 2^6662719272 is an apocalyptic number.

It is an amenable number.

6662719272 is an abundant number, since it is smaller than the sum of its proper divisors (11526899928).

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

6662719272 is a wasteful number, since it uses less digits than its factorization.

6662719272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25806 (or 25802 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 6662719272 is about 81625.4817566181. The cubic root of 6662719272 is about 1881.7005203620.

The spelling of 6662719272 in words is "six billion, six hundred sixty-two million, seven hundred nineteen thousand, two hundred seventy-two".