8664220280 has 32 divisors (see below), whose sum is σ = 19634756400. Its totient is φ = 3440752896.

The previous prime is 8664220249. The next prime is 8664220283. The reversal of 8664220280 is 820224668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664220283) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 773597 + ... + 784716.

Almost surely, 2^8664220280 is an apocalyptic number.

It is an amenable number.

8664220280 is an abundant number, since it is smaller than the sum of its proper divisors (10970536120).

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

8664220280 is a wasteful number, since it uses less digits than its factorization.

8664220280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558463 (or 1558459 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 8664220280 is about 93081.7934936795. The cubic root of 8664220280 is about 2053.8867589829.

The spelling of 8664220280 in words is "eight billion, six hundred sixty-four million, two hundred twenty thousand, two hundred eighty".