268068209 has 6 divisors (see below), whose sum is σ = 274713894. Its totient is φ = 261427680.

The previous prime is 268068193. The next prime is 268068217. The reversal of 268068209 is 902860862.

It can be written as a sum of positive squares in 3 ways, for example, as 418609 + 267649600 = 647^2 + 16360^2 .

It is not a de Polignac number, because 268068209 - 2⁴ = 268068193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268068299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103559 + ... + 106115.

It is an arithmetic number, because the mean of its divisors is an integer number (45785649).

Almost surely, 2^268068209 is an apocalyptic number.

It is an amenable number.

268068209 is a deficient number, since it is larger than the sum of its proper divisors (6645685).

268068209 is an frugal number, since it uses more digits than its factorization.

268068209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 268068209 is about 16372.7886751158. The cubic root of 268068209 is about 644.7852651363.

Multiplying 268068209 by its sum of digits (41), we get a square (10990796569 = 104837²).

268068209 divided by its sum of digits (41) gives a square (6538249 = 2557²).

The spelling of 268068209 in words is "two hundred sixty-eight million, sixty-eight thousand, two hundred nine".