8707217 has 4 divisors (see below), whose sum is σ = 8719680. Its totient is φ = 8694756.

The previous prime is 8707207. The next prime is 8707219. The reversal of 8707217 is 7127078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8707217 - 2⁸ = 8706961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8707219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5117 + ... + 6602.

It is an arithmetic number, because the mean of its divisors is an integer number (2179920).

Almost surely, 2^8707217 is an apocalyptic number.

It is an amenable number.

8707217 is a deficient number, since it is larger than the sum of its proper divisors (12463).

8707217 is a wasteful number, since it uses less digits than its factorization.

8707217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12462.

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 8707217 is about 2950.7993832180. The cubic root of 8707217 is about 205.7278666951.

The spelling of 8707217 in words is "eight million, seven hundred seven thousand, two hundred seventeen".