9817216 has 16 divisors (see below), whose sum is σ = 19557990. Its totient is φ = 4908544.

The previous prime is 9817207. The next prime is 9817217. The reversal of 9817216 is 6127189.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 817216 = 3000^2 + 904^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (9817217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38221 + ... + 38476.

Almost surely, 2^9817216 is an apocalyptic number.

It is an amenable number.

9817216 is a deficient number, since it is larger than the sum of its proper divisors (9740774).

9817216 is an equidigital number, since it uses as much as digits as its factorization.

9817216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76711 (or 76699 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 9817216 is about 3133.2436866608. The cubic root of 9817216 is about 214.1227350797.

It can be divided in two parts, 9 and 817216, that multiplied together give a square (7354944 = 2712²).

The spelling of 9817216 in words is "nine million, eight hundred seventeen thousand, two hundred sixteen".