8221548766 has 8 divisors (see below), whose sum is σ = 12868511184. Its totient is φ = 3932045040.

The previous prime is 8221548737. The next prime is 8221548799. The reversal of 8221548766 is 6678451228.

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

It is a super-2 number, since 2×8221548766² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89364615 + ... + 89364706.

It is an arithmetic number, because the mean of its divisors is an integer number (1608563898).

Almost surely, 2^8221548766 is an apocalyptic number.

8221548766 is a deficient number, since it is larger than the sum of its proper divisors (4646962418).

8221548766 is a wasteful number, since it uses less digits than its factorization.

8221548766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178729346.

The product of its digits is 1290240, while the sum is 49.

The square root of 8221548766 is about 90672.7564707283. The cubic root of 8221548766 is about 2018.2945417867.

The spelling of 8221548766 in words is "eight billion, two hundred twenty-one million, five hundred forty-eight thousand, seven hundred sixty-six".