268722197 has 2 divisors, whose sum is σ = 268722198. Its totient is φ = 268722196.

The previous prime is 268722191. The next prime is 268722203. The reversal of 268722197 is 791227862.

It is a balanced prime because it is at equal distance from previous prime (268722191) and next prime (268722203).

It can be written as a sum of positive squares in only one way, i.e., 254689681 + 14032516 = 15959^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 268722197 - 2¹² = 268718101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268722191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134361098 + 134361099.

It is an arithmetic number, because the mean of its divisors is an integer number (134361099).

Almost surely, 2^268722197 is an apocalyptic number.

It is an amenable number.

268722197 is a deficient number, since it is larger than the sum of its proper divisors (1).

268722197 is an equidigital number, since it uses as much as digits as its factorization.

268722197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 268722197 is about 16392.7483052721. The cubic root of 268722197 is about 645.3091857401.

The spelling of 268722197 in words is "two hundred sixty-eight million, seven hundred twenty-two thousand, one hundred ninety-seven".