8720504688 has 160 divisors (see below), whose sum is σ = 27353963520. Its totient is φ = 2336993280.

The previous prime is 8720504687. The next prime is 8720504699. The reversal of 8720504688 is 8864050278.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720504687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1773978 + ... + 1778886.

It is an arithmetic number, because the mean of its divisors is an integer number (170962272).

Almost surely, 2^8720504688 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 8720504688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13676981760).

8720504688 is an abundant number, since it is smaller than the sum of its proper divisors (18633458832).

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

8720504688 is a wasteful number, since it uses less digits than its factorization.

8720504688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255 (or 5249 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The square root of 8720504688 is about 93383.6425076683. The cubic root of 8720504688 is about 2058.3246415400.

The spelling of 8720504688 in words is "eight billion, seven hundred twenty million, five hundred four thousand, six hundred eighty-eight".