8720233 has 2 divisors, whose sum is σ = 8720234. Its totient is φ = 8720232.

The previous prime is 8720227. The next prime is 8720281. The reversal of 8720233 is 3320278.

It is a happy number.

8720233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8714304 + 5929 = 2952^2 + 77^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8720233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8720198 and 8720207.

It is not a weakly prime, because it can be changed into another prime (8720533) 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, 4360116 + 4360117.

It is an arithmetic number, because the mean of its divisors is an integer number (4360117).

Almost surely, 2^8720233 is an apocalyptic number.

It is an amenable number.

8720233 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720233 is an equidigital number, since it uses as much as digits as its factorization.

8720233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 8720233 is about 2953.0040636613. The cubic root of 8720233 is about 205.8303265563.

The spelling of 8720233 in words is "eight million, seven hundred twenty thousand, two hundred thirty-three".