9655840 has 48 divisors (see below), whose sum is σ = 23609880. Its totient is φ = 3727360.

The previous prime is 9655829. The next prime is 9655843. The reversal of 9655840 is 485569.

It can be written as a sum of positive squares in 4 ways, for example, as 7333264 + 2322576 = 2708^2 + 1524^2 .

It is a super-2 number, since 2×9655840² = 186470492211200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9655840.

It is not an unprimeable number, because it can be changed into a prime (9655843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3600 + ... + 5680.

Almost surely, 2^9655840 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 9655840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11804940).

9655840 is an abundant number, since it is smaller than the sum of its proper divisors (13954040).

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

9655840 is a wasteful number, since it uses less digits than its factorization.

9655840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125 (or 2117 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 9655840 is about 3107.3847524888. The cubic root of 9655840 is about 212.9429928185.

The spelling of 9655840 in words is "nine million, six hundred fifty-five thousand, eight hundred forty".