8720113 has 2 divisors, whose sum is σ = 8720114. Its totient is φ = 8720112.

The previous prime is 8720111. The next prime is 8720119. The reversal of 8720113 is 3110278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6848689 + 1871424 = 2617^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 8720113 - 2¹ = 8720111 is a prime.

Together with 8720111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8720111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360056 + 4360057.

It is an arithmetic number, because the mean of its divisors is an integer number (4360057).

Almost surely, 2^8720113 is an apocalyptic number.

It is an amenable number.

8720113 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720113 is an equidigital number, since it uses as much as digits as its factorization.

8720113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 8720113 is about 2952.9837452990. The cubic root of 8720113 is about 205.8293824014.

The spelling of 8720113 in words is "eight million, seven hundred twenty thousand, one hundred thirteen".