9617220 has 108 divisors (see below), whose sum is σ = 30797676. Its totient is φ = 2428800.

The previous prime is 9617219. The next prime is 9617233. The reversal of 9617220 is 227169.

9617220 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 can be written as a sum of positive squares in 2 ways, for example, as 6874884 + 2742336 = 2622^2 + 1656^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95170 + ... + 95270.

Almost surely, 2^9617220 is an apocalyptic number.

9617220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9617220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15398838).

9617220 is an abundant number, since it is smaller than the sum of its proper divisors (21180456).

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

9617220 is a wasteful number, since it uses less digits than its factorization.

9617220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 9617220 is about 3101.1642974857. The cubic root of 9617220 is about 212.6587141850.

The spelling of 9617220 in words is "nine million, six hundred seventeen thousand, two hundred twenty".