9616640 has 72 divisors (see below), whose sum is σ = 25165728. Its totient is φ = 3491840.

The previous prime is 9616637. The next prime is 9616657. The reversal of 9616640 is 466169.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9616597 and 9616606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13739 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (349524).

Almost surely, 2^9616640 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 9616640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12582864).

9616640 is an abundant number, since it is smaller than the sum of its proper divisors (15549088).

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

9616640 is a wasteful number, since it uses less digits than its factorization.

9616640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 9616640 is about 3101.0707828104. The cubic root of 9616640 is about 212.6544390572.

The spelling of 9616640 in words is "nine million, six hundred sixteen thousand, six hundred forty".