9221616 has 60 divisors (see below), whose sum is σ = 27333072. Its totient is φ = 2892288.

The previous prime is 9221567. The next prime is 9221617. The reversal of 9221616 is 6161229.

9221616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 9221616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 565 + ... + 4331.

Almost surely, 2^9221616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9221616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13666536).

9221616 is an abundant number, since it is smaller than the sum of its proper divisors (18111456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9221616 is a wasteful number, since it uses less digits than its factorization.

9221616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798 (or 3789 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 9221616 is about 3036.7113791073. The cubic root of 9221616 is about 209.7018899368.

The spelling of 9221616 in words is "nine million, two hundred twenty-one thousand, six hundred sixteen".