268743437 has 2 divisors, whose sum is σ = 268743438. Its totient is φ = 268743436.

The previous prime is 268743427. The next prime is 268743439. The reversal of 268743437 is 734347862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249829636 + 18913801 = 15806^2 + 4349^2 .

It is a cyclic number.

It is not a de Polignac number, because 268743437 - 2¹⁶ = 268677901 is a prime.

Together with 268743439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268743439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134371718 + 134371719.

It is an arithmetic number, because the mean of its divisors is an integer number (134371719).

Almost surely, 2^268743437 is an apocalyptic number.

It is an amenable number.

268743437 is a deficient number, since it is larger than the sum of its proper divisors (1).

268743437 is an equidigital number, since it uses as much as digits as its factorization.

268743437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 44.

The square root of 268743437 is about 16393.3961399095. The cubic root of 268743437 is about 645.3261871963.

The spelling of 268743437 in words is "two hundred sixty-eight million, seven hundred forty-three thousand, four hundred thirty-seven".