9656946659 has 4 divisors (see below), whose sum is σ = 9698393016. Its totient is φ = 9615500304.

The previous prime is 9656946623. The next prime is 9656946667. The reversal of 9656946659 is 9566496569.

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

It is a cyclic number.

It is not a de Polignac number, because 9656946659 - 2¹⁶ = 9656881123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9656946595 and 9656946604.

It is not an unprimeable number, because it can be changed into a prime (9656946619) 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, 20722829 + ... + 20723294.

It is an arithmetic number, because the mean of its divisors is an integer number (2424598254).

Almost surely, 2^9656946659 is an apocalyptic number.

9656946659 is a deficient number, since it is larger than the sum of its proper divisors (41446357).

9656946659 is a wasteful number, since it uses less digits than its factorization.

9656946659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41446356.

The product of its digits is 94478400, while the sum is 65.

The square root of 9656946659 is about 98269.7647244563. The cubic root of 9656946659 is about 2129.5112766325.

The spelling of 9656946659 in words is "nine billion, six hundred fifty-six million, nine hundred forty-six thousand, six hundred fifty-nine".