8550666720 has 96 divisors (see below), whose sum is σ = 29927348640. Its totient is φ = 2280176640.

The previous prime is 8550666679. The next prime is 8550666743. The reversal of 8550666720 is 276660558.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×8550666720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985341 + ... + 993980.

It is an arithmetic number, because the mean of its divisors is an integer number (311743215).

Almost surely, 2^8550666720 is an apocalyptic number.

8550666720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8550666720 is an abundant number, since it is smaller than the sum of its proper divisors (21376681920).

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

8550666720 is a wasteful number, since it uses less digits than its factorization.

8550666720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979345 (or 1979331 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 8550666720 is about 92469.8151831180. The cubic root of 8550666720 is about 2044.8745024542.

The spelling of 8550666720 in words is "eight billion, five hundred fifty million, six hundred sixty-six thousand, seven hundred twenty".