9956647 has 4 divisors (see below), whose sum is σ = 9969736. Its totient is φ = 9943560.

The previous prime is 9956641. The next prime is 9956699. The reversal of 9956647 is 7466599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9956647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9956597 and 9956606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9956641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5328 + ... + 6949.

It is an arithmetic number, because the mean of its divisors is an integer number (2492434).

Almost surely, 2^9956647 is an apocalyptic number.

9956647 is a deficient number, since it is larger than the sum of its proper divisors (13089).

9956647 is a wasteful number, since it uses less digits than its factorization.

9956647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13088.

The product of its digits is 408240, while the sum is 46.

The square root of 9956647 is about 3155.4155035431. The cubic root of 9956647 is about 215.1316806458.

The spelling of 9956647 in words is "nine million, nine hundred fifty-six thousand, six hundred forty-seven".