9951656 has 32 divisors (see below), whose sum is σ = 21924000. Its totient is φ = 4175040.

The previous prime is 9951637. The next prime is 9951701. The reversal of 9951656 is 6561599.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3206 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (685125).

Almost surely, 2^9951656 is an apocalyptic number.

It is an amenable number.

9951656 is an abundant number, since it is smaller than the sum of its proper divisors (11972344).

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

9951656 is a wasteful number, since it uses less digits than its factorization.

9951656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8729 (or 8725 counting only the distinct ones).

The product of its digits is 72900, while the sum is 41.

The square root of 9951656 is about 3154.6245418433. The cubic root of 9951656 is about 215.0957280579.

The spelling of 9951656 in words is "nine million, nine hundred fifty-one thousand, six hundred fifty-six".