268739 has 4 divisors (see below), whose sum is σ = 277440. Its totient is φ = 260040.

The previous prime is 268733. The next prime is 268747. The reversal of 268739 is 937862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268739 - 2¹² = 264643 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 6³ + 7⁶ + 8 + 3¹⁰ + 9⁵ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268699 and 268708.

It is not an unprimeable number, because it can be changed into a prime (268733) 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, 4304 + ... + 4365.

It is an arithmetic number, because the mean of its divisors is an integer number (69360).

2²⁶⁸⁷³⁹ is an apocalyptic number.

268739 is a deficient number, since it is larger than the sum of its proper divisors (8701).

268739 is an equidigital number, since it uses as much as digits as its factorization.

268739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700.

The product of its digits is 18144, while the sum is 35.

The square root of 268739 is about 518.4004243825. The cubic root of 268739 is about 64.5322635695.

The spelling of 268739 in words is "two hundred sixty-eight thousand, seven hundred thirty-nine".