8220660008 has 16 divisors (see below), whose sum is σ = 16814986560. Its totient is φ = 3736663600.

The previous prime is 8220660001. The next prime is 8220660017. The reversal of 8220660008 is 8000660228.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8220660001) 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, 46708208 + ... + 46708383.

It is an arithmetic number, because the mean of its divisors is an integer number (1050936660).

Almost surely, 2^8220660008 is an apocalyptic number.

8220660008 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8220660008 is an abundant number, since it is smaller than the sum of its proper divisors (8594326552).

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

8220660008 is a wasteful number, since it uses less digits than its factorization.

8220660008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93416608 (or 93416604 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 8220660008 is about 90667.8554284814. The cubic root of 8220660008 is about 2018.2218125839.

The spelling of 8220660008 in words is "eight billion, two hundred twenty million, six hundred sixty thousand, eight".