9664895633 has 2 divisors, whose sum is σ = 9664895634. Its totient is φ = 9664895632.

The previous prime is 9664895609. The next prime is 9664895767. The reversal of 9664895633 is 3365984669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5217606289 + 4447289344 = 72233^2 + 66688^2 .

It is an emirp because it is prime and its reverse (3365984669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9664895633 - 2¹⁴ = 9664879249 is a prime.

It is not a weakly prime, because it can be changed into another prime (9664895533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832447816 + 4832447817.

It is an arithmetic number, because the mean of its divisors is an integer number (4832447817).

Almost surely, 2^9664895633 is an apocalyptic number.

It is an amenable number.

9664895633 is a deficient number, since it is larger than the sum of its proper divisors (1).

9664895633 is an equidigital number, since it uses as much as digits as its factorization.

9664895633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25194240, while the sum is 59.

The square root of 9664895633 is about 98310.2010627585. The cubic root of 9664895633 is about 2130.0954083796.

The spelling of 9664895633 in words is "nine billion, six hundred sixty-four million, eight hundred ninety-five thousand, six hundred thirty-three".