268747217 has 2 divisors, whose sum is σ = 268747218. Its totient is φ = 268747216.

The previous prime is 268747207. The next prime is 268747223. The reversal of 268747217 is 712747862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263867536 + 4879681 = 16244^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 268747217 - 2¹⁰ = 268746193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268747207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134373608 + 134373609.

It is an arithmetic number, because the mean of its divisors is an integer number (134373609).

Almost surely, 2^268747217 is an apocalyptic number.

It is an amenable number.

268747217 is a deficient number, since it is larger than the sum of its proper divisors (1).

268747217 is an equidigital number, since it uses as much as digits as its factorization.

268747217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 44.

The square root of 268747217 is about 16393.5114298310. The cubic root of 268747217 is about 645.3292127853.

The spelling of 268747217 in words is "two hundred sixty-eight million, seven hundred forty-seven thousand, two hundred seventeen".