268739213 has 4 divisors (see below), whose sum is σ = 284547420. Its totient is φ = 252931008.

The previous prime is 268739209. The next prime is 268739267. The reversal of 268739213 is 312937862.

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 168298729 + 100440484 = 12973^2 + 10022^2 .

It is a cyclic number.

It is not a de Polignac number, because 268739213 - 2² = 268739209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268739113) 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, 7904078 + ... + 7904111.

It is an arithmetic number, because the mean of its divisors is an integer number (71136855).

Almost surely, 2^268739213 is an apocalyptic number.

It is an amenable number.

268739213 is a deficient number, since it is larger than the sum of its proper divisors (15808207).

268739213 is a wasteful number, since it uses less digits than its factorization.

268739213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15808206.

The product of its digits is 108864, while the sum is 41.

The square root of 268739213 is about 16393.2673070380. The cubic root of 268739213 is about 645.3228061871.

The spelling of 268739213 in words is "two hundred sixty-eight million, seven hundred thirty-nine thousand, two hundred thirteen".