8820257 has 2 divisors, whose sum is σ = 8820258. Its totient is φ = 8820256.

The previous prime is 8820223. The next prime is 8820269. The reversal of 8820257 is 7520288.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6885376 + 1934881 = 2624^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 8820257 - 2⁶ = 8820193 is a prime.

It is not a weakly prime, because it can be changed into another prime (8820857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410128 + 4410129.

It is an arithmetic number, because the mean of its divisors is an integer number (4410129).

Almost surely, 2^8820257 is an apocalyptic number.

It is an amenable number.

8820257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8820257 is an equidigital number, since it uses as much as digits as its factorization.

8820257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 8820257 is about 2969.8917488690. The cubic root of 8820257 is about 206.6143175885.

The spelling of 8820257 in words is "eight million, eight hundred twenty thousand, two hundred fifty-seven".