9646 has 16 divisors (see below), whose sum is σ = 18144. Its totient is φ = 3744.

The previous prime is 9643. The next prime is 9649. The reversal of 9646 is 6469.

It is an interprime number because it is at equal distance from previous prime (9643) and next prime (9649).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 9646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9643) 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, 156 + ... + 208.

It is an arithmetic number, because the mean of its divisors is an integer number (1134).

2⁹⁶⁴⁶ is an apocalyptic number.

9646 is a deficient number, since it is larger than the sum of its proper divisors (8498).

9646 is a wasteful number, since it uses less digits than its factorization.

9646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75.

The product of its digits is 1296, while the sum is 25.

The square root of 9646 is about 98.2140519478. The cubic root of 9646 is about 21.2870633458.

The spelling of 9646 in words is "nine thousand, six hundred forty-six".