268236689 has 8 divisors (see below), whose sum is σ = 317127360. Its totient is φ = 221988816.

The previous prime is 268236667. The next prime is 268236697. The reversal of 268236689 is 986632862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268236689 - 2²⁴ = 251459473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268236629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660479 + ... + 660884.

It is an arithmetic number, because the mean of its divisors is an integer number (39640920).

Almost surely, 2^268236689 is an apocalyptic number.

268236689 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

268236689 is a deficient number, since it is larger than the sum of its proper divisors (48890671).

268236689 is a wasteful number, since it uses less digits than its factorization.

268236689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321399.

The product of its digits is 1492992, while the sum is 50.

The square root of 268236689 is about 16377.9329892389. The cubic root of 268236689 is about 644.9203186627.

The spelling of 268236689 in words is "two hundred sixty-eight million, two hundred thirty-six thousand, six hundred eighty-nine".