268069817 has 2 divisors, whose sum is σ = 268069818. Its totient is φ = 268069816.

The previous prime is 268069793. The next prime is 268069819. The reversal of 268069817 is 718960862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256672441 + 11397376 = 16021^2 + 3376^2 .

It is a cyclic number.

It is not a de Polignac number, because 268069817 - 2¹⁰ = 268068793 is a prime.

It is a super-2 number, since 2×268069817² = 143722853572826978, which contains 22 as substring.

Together with 268069819, 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 (268069819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134034908 + 134034909.

It is an arithmetic number, because the mean of its divisors is an integer number (134034909).

Almost surely, 2^268069817 is an apocalyptic number.

It is an amenable number.

268069817 is a deficient number, since it is larger than the sum of its proper divisors (1).

268069817 is an equidigital number, since it uses as much as digits as its factorization.

268069817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 268069817 is about 16372.8377809102. The cubic root of 268069817 is about 644.7865543761.

The spelling of 268069817 in words is "two hundred sixty-eight million, sixty-nine thousand, eight hundred seventeen".