271968689 has 2 divisors, whose sum is σ = 271968690. Its totient is φ = 271968688.

The previous prime is 271968677. The next prime is 271968691. The reversal of 271968689 is 986869172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179962225 + 92006464 = 13415^2 + 9592^2 .

It is a cyclic number.

It is not a de Polignac number, because 271968689 - 2¹² = 271964593 is a prime.

Together with 271968691, 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 (271968589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135984344 + 135984345.

It is an arithmetic number, because the mean of its divisors is an integer number (135984345).

Almost surely, 2^271968689 is an apocalyptic number.

It is an amenable number.

271968689 is a deficient number, since it is larger than the sum of its proper divisors (1).

271968689 is an equidigital number, since it uses as much as digits as its factorization.

271968689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 56.

The square root of 271968689 is about 16491.4732210315. The cubic root of 271968689 is about 647.8974976630.

The spelling of 271968689 in words is "two hundred seventy-one million, nine hundred sixty-eight thousand, six hundred eighty-nine".