6226247721 has 8 divisors (see below), whose sum is σ = 8382262720. Its totient is φ = 4110532272.

The previous prime is 6226247707. The next prime is 6226247747. The reversal of 6226247721 is 1277426226.

It is a happy number.

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

It is not a de Polignac number, because 6226247721 - 2⁵ = 6226247689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6226247721.

It is not an unprimeable number, because it can be changed into a prime (6226247701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10074526 + ... + 10075143.

It is an arithmetic number, because the mean of its divisors is an integer number (1047782840).

Almost surely, 2^6226247721 is an apocalyptic number.

It is an amenable number.

6226247721 is a deficient number, since it is larger than the sum of its proper divisors (2156014999).

6226247721 is a wasteful number, since it uses less digits than its factorization.

6226247721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20149775.

The product of its digits is 112896, while the sum is 39.

The square root of 6226247721 is about 78906.5759046735. The cubic root of 6226247721 is about 1839.6793432442.

The spelling of 6226247721 in words is "six billion, two hundred twenty-six million, two hundred forty-seven thousand, seven hundred twenty-one".