8766720 has 108 divisors (see below), whose sum is σ = 30371796. Its totient is φ = 2334720.

The previous prime is 8766701. The next prime is 8766721. The reversal of 8766720 is 276678.

8766720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 7750656 = 1008^2 + 2784^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8766721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11140 + ... + 11900.

Almost surely, 2^8766720 is an apocalyptic number.

8766720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8766720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15185898).

8766720 is an abundant number, since it is smaller than the sum of its proper divisors (21605076).

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

8766720 is a wasteful number, since it uses less digits than its factorization.

8766720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 8766720 is about 2960.8647385519. The cubic root of 8766720 is about 206.1954346013.

The spelling of 8766720 in words is "eight million, seven hundred sixty-six thousand, seven hundred twenty".