9656946666 has 24 divisors (see below), whose sum is σ = 21118934304. Its totient is φ = 3188897640.

The previous prime is 9656946623. The next prime is 9656946667. The reversal of 9656946666 is 6666496569.

It is not an unprimeable number, because it can be changed into a prime (9656946667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2505070 + ... + 2508921.

It is an arithmetic number, because the mean of its divisors is an integer number (879955596).

Almost surely, 2^9656946666 is an apocalyptic number.

9656946666 is an abundant number, since it is smaller than the sum of its proper divisors (11461987638).

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

9656946666 is a wasteful number, since it uses less digits than its factorization.

9656946666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014106 (or 5014103 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 63.

The square root of 9656946666 is about 98269.7647600726. The cubic root of 9656946666 is about 2129.5112771470.

The spelling of 9656946666 in words is "nine billion, six hundred fifty-six million, nine hundred forty-six thousand, six hundred sixty-six".