268710649 has 2 divisors, whose sum is σ = 268710650. Its totient is φ = 268710648.

The previous prime is 268710643. The next prime is 268710671. The reversal of 268710649 is 946017862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258180624 + 10530025 = 16068^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 268710649 - 2¹⁹ = 268186361 is a prime.

It is not a weakly prime, because it can be changed into another prime (268710643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134355324 + 134355325.

It is an arithmetic number, because the mean of its divisors is an integer number (134355325).

Almost surely, 2^268710649 is an apocalyptic number.

It is an amenable number.

268710649 is a deficient number, since it is larger than the sum of its proper divisors (1).

268710649 is an equidigital number, since it uses as much as digits as its factorization.

268710649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 268710649 is about 16392.3960725697. The cubic root of 268710649 is about 645.2999418228.

The spelling of 268710649 in words is "two hundred sixty-eight million, seven hundred ten thousand, six hundred forty-nine".