9666280997 has 2 divisors, whose sum is σ = 9666280998. Its totient is φ = 9666280996.

The previous prime is 9666280979. The next prime is 9666280999. The reversal of 9666280997 is 7990826669.

Together with previous prime (9666280979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9665642596 + 638401 = 98314^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 9666280997 - 2¹² = 9666276901 is a prime.

Together with 9666280999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9666280999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833140498 + 4833140499.

It is an arithmetic number, because the mean of its divisors is an integer number (4833140499).

Almost surely, 2^9666280997 is an apocalyptic number.

It is an amenable number.

9666280997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9666280997 is an equidigital number, since it uses as much as digits as its factorization.

9666280997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 9666280997 is about 98317.2466915139. The cubic root of 9666280997 is about 2130.1971793186.

The spelling of 9666280997 in words is "nine billion, six hundred sixty-six million, two hundred eighty thousand, nine hundred ninety-seven".