268207913 has 4 divisors (see below), whose sum is σ = 271882068. Its totient is φ = 264533760.

The previous prime is 268207903. The next prime is 268207949. The reversal of 268207913 is 319702862.

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 229916569 + 38291344 = 15163^2 + 6188^2 .

It is a cyclic number.

It is not a de Polignac number, because 268207913 - 2²⁰ = 267159337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268207903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836968 + ... + 1837113.

It is an arithmetic number, because the mean of its divisors is an integer number (67970517).

Almost surely, 2^268207913 is an apocalyptic number.

It is an amenable number.

268207913 is a deficient number, since it is larger than the sum of its proper divisors (3674155).

268207913 is an equidigital number, since it uses as much as digits as its factorization.

268207913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674154.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 268207913 is about 16377.0544665395. The cubic root of 268207913 is about 644.8972558336.

The spelling of 268207913 in words is "two hundred sixty-eight million, two hundred seven thousand, nine hundred thirteen".