8221654719 has 12 divisors (see below), whose sum is σ = 11998154896. Its totient is φ = 5424596352.

The previous prime is 8221654717. The next prime is 8221654729. The reversal of 8221654719 is 9174561228.

8221654719 is a `hidden beast` number, since 82 + 2 + 16 + 547 + 19 = 666.

It is not a de Polignac number, because 8221654719 - 2¹ = 8221654717 is a prime.

It is a super-2 number, since 2×8221654719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221654717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4707979 + ... + 4709724.

Almost surely, 2^8221654719 is an apocalyptic number.

8221654719 is a deficient number, since it is larger than the sum of its proper divisors (3776500177).

8221654719 is a wasteful number, since it uses less digits than its factorization.

8221654719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417806 (or 9417803 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 8221654719 is about 90673.3407292353. The cubic root of 8221654719 is about 2018.3032118256.

The spelling of 8221654719 in words is "eight billion, two hundred twenty-one million, six hundred fifty-four thousand, seven hundred nineteen".