9648221 has 4 divisors (see below), whose sum is σ = 10525344. Its totient is φ = 8771100.

The previous prime is 9648217. The next prime is 9648229. The reversal of 9648221 is 1228469.

9648221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9648221 - 2² = 9648217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9648229) 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, 438545 + ... + 438566.

It is an arithmetic number, because the mean of its divisors is an integer number (2631336).

Almost surely, 2^9648221 is an apocalyptic number.

It is an amenable number.

9648221 is a deficient number, since it is larger than the sum of its proper divisors (877123).

9648221 is a wasteful number, since it uses less digits than its factorization.

9648221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877122.

The product of its digits is 6912, while the sum is 32.

The square root of 9648221 is about 3106.1585600223. The cubic root of 9648221 is about 212.8869700877.

The spelling of 9648221 in words is "nine million, six hundred forty-eight thousand, two hundred twenty-one".