8720227 has 2 divisors, whose sum is σ = 8720228. Its totient is φ = 8720226.

The previous prime is 8720191. The next prime is 8720233. The reversal of 8720227 is 7220278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8720227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8720195 and 8720204.

It is not a weakly prime, because it can be changed into another prime (8720027) 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, 4360113 + 4360114.

It is an arithmetic number, because the mean of its divisors is an integer number (4360114).

Almost surely, 2^8720227 is an apocalyptic number.

8720227 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720227 is an equidigital number, since it uses as much as digits as its factorization.

8720227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 8720227 is about 2953.0030477465. The cubic root of 8720227 is about 205.8302793488.

The spelling of 8720227 in words is "eight million, seven hundred twenty thousand, two hundred twenty-seven".