8170649 has 2 divisors, whose sum is σ = 8170650. Its totient is φ = 8170648.

The previous prime is 8170619. The next prime is 8170697. The reversal of 8170649 is 9460718.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6927424 + 1243225 = 2632^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 8170649 - 2¹² = 8166553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8170619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4085324 + 4085325.

It is an arithmetic number, because the mean of its divisors is an integer number (4085325).

Almost surely, 2^8170649 is an apocalyptic number.

It is an amenable number.

8170649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8170649 is an equidigital number, since it uses as much as digits as its factorization.

8170649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 8170649 is about 2858.4347115161. The cubic root of 8170649 is about 201.4120816631.

The spelling of 8170649 in words is "eight million, one hundred seventy thousand, six hundred forty-nine".