268729 has 2 divisors, whose sum is σ = 268730. Its totient is φ = 268728.

The previous prime is 268721. The next prime is 268733. The reversal of 268729 is 927862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139129 + 129600 = 373^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 268729 - 2³ = 268721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268694 and 268703.

It is not a weakly prime, because it can be changed into another prime (268721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134364 + 134365.

It is an arithmetic number, because the mean of its divisors is an integer number (134365).

2²⁶⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

268729 is a deficient number, since it is larger than the sum of its proper divisors (1).

268729 is an equidigital number, since it uses as much as digits as its factorization.

268729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 268729 is about 518.3907792390. The cubic root of 268729 is about 64.5314631266.

The spelling of 268729 in words is "two hundred sixty-eight thousand, seven hundred twenty-nine".