9641720 has 64 divisors (see below), whose sum is σ = 25077600. Its totient is φ = 3297280.

The previous prime is 9641657. The next prime is 9641741. The reversal of 9641720 is 271469.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6836 + ... + 8124.

Almost surely, 2^9641720 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 9641720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12538800).

9641720 is an abundant number, since it is smaller than the sum of its proper divisors (15435880).

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

9641720 is a wasteful number, since it uses less digits than its factorization.

9641720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 9641720 is about 3105.1119142472. Note that the first 3 decimals coincide. The cubic root of 9641720 is about 212.8391447200.

The spelling of 9641720 in words is "nine million, six hundred forty-one thousand, seven hundred twenty".