9959656 has 32 divisors (see below), whose sum is σ = 21450240. Its totient is φ = 4246848.

The previous prime is 9959641. The next prime is 9959659. The reversal of 9959656 is 6569599.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9959659) 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, 16105 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^9959656 is an apocalyptic number.

It is an amenable number.

9959656 is an abundant number, since it is smaller than the sum of its proper divisors (11490584).

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

9959656 is a wasteful number, since it uses less digits than its factorization.

9959656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 909 counting only the distinct ones).

The product of its digits is 656100, while the sum is 49.

The square root of 9959656 is about 3155.8922668558. The cubic root of 9959656 is about 215.1533501237.

The spelling of 9959656 in words is "nine million, nine hundred fifty-nine thousand, six hundred fifty-six".