268117669 has 2 divisors, whose sum is σ = 268117670. Its totient is φ = 268117668.

The previous prime is 268117637. The next prime is 268117687. The reversal of 268117669 is 966711862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205549569 + 62568100 = 14337^2 + 7910^2 .

It is a cyclic number.

It is not a de Polignac number, because 268117669 - 2⁵ = 268117637 is a prime.

It is a super-2 number, since 2×268117669² = 143774168859987122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268117769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134058834 + 134058835.

It is an arithmetic number, because the mean of its divisors is an integer number (134058835).

Almost surely, 2^268117669 is an apocalyptic number.

It is an amenable number.

268117669 is a deficient number, since it is larger than the sum of its proper divisors (1).

268117669 is an equidigital number, since it uses as much as digits as its factorization.

268117669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 268117669 is about 16374.2990384321. The cubic root of 268117669 is about 644.8249181263.

The spelling of 268117669 in words is "two hundred sixty-eight million, one hundred seventeen thousand, six hundred sixty-nine".