8366257 has 2 divisors, whose sum is σ = 8366258. Its totient is φ = 8366256.

The previous prime is 8366243. The next prime is 8366263. The reversal of 8366257 is 7526638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7667361 + 698896 = 2769^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 8366257 - 2⁷ = 8366129 is a prime.

8366257 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8366207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4183128 + 4183129.

It is an arithmetic number, because the mean of its divisors is an integer number (4183129).

Almost surely, 2^8366257 is an apocalyptic number.

It is an amenable number.

8366257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8366257 is an equidigital number, since it uses as much as digits as its factorization.

8366257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 8366257 is about 2892.4482709290. The cubic root of 8366257 is about 203.0067135217.

The spelling of 8366257 in words is "eight million, three hundred sixty-six thousand, two hundred fifty-seven".