8755720 has 32 divisors (see below), whose sum is σ = 19984320. Its totient is φ = 3451840.

The previous prime is 8755711. The next prime is 8755723. The reversal of 8755720 is 275578.

8755720 = 757² + 758² + ... + 771².

It is not an unprimeable number, because it can be changed into a prime (8755723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299 + ... + 4381.

It is an arithmetic number, because the mean of its divisors is an integer number (624510).

Almost surely, 2^8755720 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 8755720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9992160).

8755720 is an abundant number, since it is smaller than the sum of its proper divisors (11228600).

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

8755720 is a wasteful number, since it uses less digits than its factorization.

8755720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 8755720 is about 2959.0065900569. The cubic root of 8755720 is about 206.1091575941.

The spelling of 8755720 in words is "eight million, seven hundred fifty-five thousand, seven hundred twenty".