268998609 has 12 divisors (see below), whose sum is σ = 394235408. Its totient is φ = 163029240.

The previous prime is 268998551. The next prime is 268998617. The reversal of 268998609 is 906899862.

It is not a de Polignac number, because 268998609 - 2¹² = 268994513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268998629) 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 in 11 ways as a sum of consecutive naturals, for example, 370159 + ... + 370884.

Almost surely, 2^268998609 is an apocalyptic number.

It is an amenable number.

268998609 is a deficient number, since it is larger than the sum of its proper divisors (125236799).

268998609 is a wasteful number, since it uses less digits than its factorization.

268998609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741068 (or 741057 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 268998609 is about 16401.1770614185. The cubic root of 268998609 is about 645.5303684101.

The spelling of 268998609 in words is "two hundred sixty-eight million, nine hundred ninety-eight thousand, six hundred nine".