268890269 has 2 divisors, whose sum is σ = 268890270. Its totient is φ = 268890268.

The previous prime is 268890239. The next prime is 268890287. The reversal of 268890269 is 962098862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258405625 + 10484644 = 16075^2 + 3238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268890269 is a prime.

It is a super-2 number, since 2×268890269² = 144603953525784722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268890239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134445134 + 134445135.

It is an arithmetic number, because the mean of its divisors is an integer number (134445135).

Almost surely, 2^268890269 is an apocalyptic number.

It is an amenable number.

268890269 is a deficient number, since it is larger than the sum of its proper divisors (1).

268890269 is an equidigital number, since it uses as much as digits as its factorization.

268890269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 268890269 is about 16397.8739170662. The cubic root of 268890269 is about 645.4436936728.

The spelling of 268890269 in words is "two hundred sixty-eight million, eight hundred ninety thousand, two hundred sixty-nine".