97967321 has 2 divisors, whose sum is σ = 97967322. Its totient is φ = 97967320.

The previous prime is 97967299. The next prime is 97967323. The reversal of 97967321 is 12376979.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62980096 + 34987225 = 7936^2 + 5915^2 .

It is a cyclic number.

It is not a de Polignac number, because 97967321 - 2⁶ = 97967257 is a prime.

Together with 97967323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97967323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48983660 + 48983661.

It is an arithmetic number, because the mean of its divisors is an integer number (48983661).

Almost surely, 2^97967321 is an apocalyptic number.

It is an amenable number.

97967321 is a deficient number, since it is larger than the sum of its proper divisors (1).

97967321 is an equidigital number, since it uses as much as digits as its factorization.

97967321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 44.

The square root of 97967321 is about 9897.8442602417. The cubic root of 97967321 is about 460.9923770978.

The spelling of 97967321 in words is "ninety-seven million, nine hundred sixty-seven thousand, three hundred twenty-one".