8221665146 has 8 divisors (see below), whose sum is σ = 12868693344. Its totient is φ = 3932100700.

The previous prime is 8221665139. The next prime is 8221665149. The reversal of 8221665146 is 6415661228.

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

It is not an unprimeable number, because it can be changed into a prime (8221665149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89365880 + ... + 89365971.

It is an arithmetic number, because the mean of its divisors is an integer number (1608586668).

Almost surely, 2^8221665146 is an apocalyptic number.

8221665146 is a deficient number, since it is larger than the sum of its proper divisors (4647028198).

8221665146 is a wasteful number, since it uses less digits than its factorization.

8221665146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178731876.

The product of its digits is 138240, while the sum is 41.

The square root of 8221665146 is about 90673.3982268228. The cubic root of 8221665146 is about 2018.3040650536.

The spelling of 8221665146 in words is "eight billion, two hundred twenty-one million, six hundred sixty-five thousand, one hundred forty-six".