8221698576 has 540 divisors, whose sum is σ = 30429427392. Its totient is φ = 2028589056.

The previous prime is 8221698517. The next prime is 8221698623. The reversal of 8221698576 is 6758961228.

8221698576 is a `hidden beast` number, since 8 + 2 + 2 + 1 + 69 + 8 + 576 = 666.

It is a congruent number.

It is an unprimeable number.

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 107 ways as a sum of consecutive naturals, for example, 49231645 + ... + 49231811.

Almost surely, 2^8221698576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8221698576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15214713696).

8221698576 is an abundant number, since it is smaller than the sum of its proper divisors (22207728816).

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

8221698576 is a wasteful number, since it uses less digits than its factorization.

8221698576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 209 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 8221698576 is about 90673.5825695665. The cubic root of 8221698576 is about 2018.3068005827.

The spelling of 8221698576 in words is "eight billion, two hundred twenty-one million, six hundred ninety-eight thousand, five hundred seventy-six".