6727221647 has 8 divisors (see below), whose sum is σ = 6782106672. Its totient is φ = 6672390400.

The previous prime is 6727221587. The next prime is 6727221649. The reversal of 6727221647 is 7461227276.

6727221647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6727221647 - 2³² = 2432254351 is a prime.

It is a super-3 number, since 3×6727221647³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6727221598 and 6727221607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6727221649) 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, 260273 + ... + 284949.

It is an arithmetic number, because the mean of its divisors is an integer number (847763334).

Almost surely, 2^6727221647 is an apocalyptic number.

6727221647 is a deficient number, since it is larger than the sum of its proper divisors (54885025).

6727221647 is a wasteful number, since it uses less digits than its factorization.

6727221647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26889.

The product of its digits is 395136, while the sum is 44.

The square root of 6727221647 is about 82019.6418365747. The cubic root of 6727221647 is about 1887.7533326741.

The spelling of 6727221647 in words is "six billion, seven hundred twenty-seven million, two hundred twenty-one thousand, six hundred forty-seven".