9136640 has 80 divisors (see below), whose sum is σ = 22686048. Its totient is φ = 3526656.

The previous prime is 9136637. The next prime is 9136643. The reversal of 9136640 is 466319.

It is an interprime number because it is at equal distance from previous prime (9136637) and next prime (9136643).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (9136643) 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, 110039 + ... + 110121.

Almost surely, 2^9136640 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 9136640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11343024).

9136640 is an abundant number, since it is smaller than the sum of its proper divisors (13549408).

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

9136640 is an equidigital number, since it uses as much as digits as its factorization.

9136640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 9136640 is about 3022.6875458770. The cubic root of 9136640 is about 209.0557759610.

The spelling of 9136640 in words is "nine million, one hundred thirty-six thousand, six hundred forty".