8585217 has 8 divisors (see below), whose sum is σ = 12718880. Its totient is φ = 5723460.

The previous prime is 8585209. The next prime is 8585237. The reversal of 8585217 is 7125858.

It is not a de Polignac number, because 8585217 - 2³ = 8585209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8585237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158959 + ... + 159012.

It is an arithmetic number, because the mean of its divisors is an integer number (1589860).

It is a Proth number, since it is equal to 131 ⋅ 2¹⁶ + 1 and 131 < 2¹⁶.

Almost surely, 2^8585217 is an apocalyptic number.

It is an amenable number.

8585217 is a deficient number, since it is larger than the sum of its proper divisors (4133663).

8585217 is a wasteful number, since it uses less digits than its factorization.

8585217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317980 (or 317974 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 8585217 is about 2930.0540950638. The cubic root of 8585217 is about 204.7625010816.

It can be divided in two parts, 8 and 585217, that added together give a square (585225 = 765²).

The spelling of 8585217 in words is "eight million, five hundred eighty-five thousand, two hundred seventeen".