9681797 has 2 divisors, whose sum is σ = 9681798. Its totient is φ = 9681796.

The previous prime is 9681769. The next prime is 9681799. The reversal of 9681797 is 7971869.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9541921 + 139876 = 3089^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 9681797 - 2¹⁸ = 9419653 is a prime.

Together with 9681799, 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 (9681799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4840898 + 4840899.

It is an arithmetic number, because the mean of its divisors is an integer number (4840899).

Almost surely, 2^9681797 is an apocalyptic number.

It is an amenable number.

9681797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9681797 is an equidigital number, since it uses as much as digits as its factorization.

9681797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 9681797 is about 3111.5586126570. The cubic root of 9681797 is about 213.1336344658.

The spelling of 9681797 in words is "nine million, six hundred eighty-one thousand, seven hundred ninety-seven".