268217 has 4 divisors (see below), whose sum is σ = 272676. Its totient is φ = 263760.

The previous prime is 268211. The next prime is 268237. The reversal of 268217 is 712862.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55696 + 212521 = 236^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 268217 - 2⁶ = 268153 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (268211) 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, 2138 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (68169).

2²⁶⁸²¹⁷ is an apocalyptic number.

It is an amenable number.

268217 is a deficient number, since it is larger than the sum of its proper divisors (4459).

268217 is an equidigital number, since it uses as much as digits as its factorization.

268217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458.

The product of its digits is 1344, while the sum is 26.

The square root of 268217 is about 517.8967078482. The cubic root of 268217 is about 64.4904538884.

The spelling of 268217 in words is "two hundred sixty-eight thousand, two hundred seventeen".