9666890033 has 2 divisors, whose sum is σ = 9666890034. Its totient is φ = 9666890032.

The previous prime is 9666889963. The next prime is 9666890059. The reversal of 9666890033 is 3300986669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9056948224 + 609941809 = 95168^2 + 24697^2 .

It is an emirp because it is prime and its reverse (3300986669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9666890033 - 2¹⁰ = 9666889009 is a prime.

It is a super-2 number, since 2×9666890033² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9666190033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833445016 + 4833445017.

It is an arithmetic number, because the mean of its divisors is an integer number (4833445017).

Almost surely, 2^9666890033 is an apocalyptic number.

It is an amenable number.

9666890033 is a deficient number, since it is larger than the sum of its proper divisors (1).

9666890033 is an equidigital number, since it uses as much as digits as its factorization.

9666890033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 9666890033 is about 98320.3439426450. The cubic root of 9666890033 is about 2130.2419169491.

The spelling of 9666890033 in words is "nine billion, six hundred sixty-six million, eight hundred ninety thousand, thirty-three".