9685221 has 24 divisors (see below), whose sum is σ = 15986880. Its totient is φ = 5106816.

The previous prime is 9685213. The next prime is 9685229. The reversal of 9685221 is 1225869.

9685221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9685213) and next prime (9685229).

It is not a de Polignac number, because 9685221 - 2³ = 9685213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9685229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2185 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (666120).

Almost surely, 2^9685221 is an apocalyptic number.

9685221 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

9685221 is a deficient number, since it is larger than the sum of its proper divisors (6301659).

9685221 is a wasteful number, since it uses less digits than its factorization.

9685221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2752 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 9685221 is about 3112.1087705927. The cubic root of 9685221 is about 213.1587566463.

The spelling of 9685221 in words is "nine million, six hundred eighty-five thousand, two hundred twenty-one".