268217377 has 2 divisors, whose sum is σ = 268217378. Its totient is φ = 268217376.

The previous prime is 268217371. The next prime is 268217399. The reversal of 268217377 is 773712862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261436561 + 6780816 = 16169^2 + 2604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268217377 is a prime.

It is a super-2 number, since 2×268217377² = 143881122649520258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (268217371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134108688 + 134108689.

It is an arithmetic number, because the mean of its divisors is an integer number (134108689).

Almost surely, 2^268217377 is an apocalyptic number.

It is an amenable number.

268217377 is a deficient number, since it is larger than the sum of its proper divisors (1).

268217377 is an equidigital number, since it uses as much as digits as its factorization.

268217377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 43.

The square root of 268217377 is about 16377.3434048383. The cubic root of 268217377 is about 644.9048410384.

The spelling of 268217377 in words is "two hundred sixty-eight million, two hundred seventeen thousand, three hundred seventy-seven".