68243297 has 2 divisors, whose sum is σ = 68243298. Its totient is φ = 68243296.

The previous prime is 68243261. The next prime is 68243303. The reversal of 68243297 is 79234286.

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., 51136801 + 17106496 = 7151^2 + 4136^2 .

It is a cyclic number.

It is not a de Polignac number, because 68243297 - 2¹² = 68239201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68243257) 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, 34121648 + 34121649.

It is an arithmetic number, because the mean of its divisors is an integer number (34121649).

Almost surely, 2^68243297 is an apocalyptic number.

It is an amenable number.

68243297 is a deficient number, since it is larger than the sum of its proper divisors (1).

68243297 is an equidigital number, since it uses as much as digits as its factorization.

68243297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 68243297 is about 8260.9501269527. The cubic root of 68243297 is about 408.6517221726.

The spelling of 68243297 in words is "sixty-eight million, two hundred forty-three thousand, two hundred ninety-seven".