9673640 has 32 divisors (see below), whose sum is σ = 22140000. Its totient is φ = 3802944.

The previous prime is 9673627. The next prime is 9673649. The reversal of 9673640 is 463769.

9673640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9673640.

It is not an unprimeable number, because it can be changed into a prime (9673649) 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, 311 + ... + 4409.

It is an arithmetic number, because the mean of its divisors is an integer number (691875).

Almost surely, 2^9673640 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 9673640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11070000).

9673640 is an abundant number, since it is smaller than the sum of its proper divisors (12466360).

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

9673640 is a wasteful number, since it uses less digits than its factorization.

9673640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4165 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 9673640 is about 3110.2475785699. The cubic root of 9673640 is about 213.0737619881.

The spelling of 9673640 in words is "nine million, six hundred seventy-three thousand, six hundred forty".