268806729 has 4 divisors (see below), whose sum is σ = 358408976. Its totient is φ = 179204484.

The previous prime is 268806709. The next prime is 268806731. The reversal of 268806729 is 927608862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 268806729 - 2⁹ = 268806217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (268806709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44801119 + ... + 44801124.

It is an arithmetic number, because the mean of its divisors is an integer number (89602244).

Almost surely, 2^268806729 is an apocalyptic number.

It is an amenable number.

268806729 is a deficient number, since it is larger than the sum of its proper divisors (89602247).

268806729 is an equidigital number, since it uses as much as digits as its factorization.

268806729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89602246.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 268806729 is about 16395.3264377383. The cubic root of 268806729 is about 645.3768436632.

The spelling of 268806729 in words is "two hundred sixty-eight million, eight hundred six thousand, seven hundred twenty-nine".