8668737720 has 256 divisors, whose sum is σ = 30351283200. Its totient is φ = 2196564480.

The previous prime is 8668737677. The next prime is 8668737811. The reversal of 8668737720 is 277378668.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4047850 + ... + 4049990.

It is an arithmetic number, because the mean of its divisors is an integer number (118559700).

Almost surely, 2^8668737720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8668737720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15175641600).

8668737720 is an abundant number, since it is smaller than the sum of its proper divisors (21682545480).

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

8668737720 is a wasteful number, since it uses less digits than its factorization.

8668737720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The square root of 8668737720 is about 93106.0563014029. The cubic root of 8668737720 is about 2054.2436558079.

The spelling of 8668737720 in words is "eight billion, six hundred sixty-eight million, seven hundred thirty-seven thousand, seven hundred twenty".