268673209 has 4 divisors (see below), whose sum is σ = 307055104. Its totient is φ = 230291316.

The previous prime is 268673191. The next prime is 268673257. The reversal of 268673209 is 902376862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268673209 - 2⁹ = 268672697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268673309) 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, 19190937 + ... + 19190950.

It is an arithmetic number, because the mean of its divisors is an integer number (76763776).

Almost surely, 2^268673209 is an apocalyptic number.

It is an amenable number.

268673209 is a deficient number, since it is larger than the sum of its proper divisors (38381895).

268673209 is an equidigital number, since it uses as much as digits as its factorization.

268673209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38381894.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 268673209 is about 16391.2540398836. The cubic root of 268673209 is about 645.2699701140.

The spelling of 268673209 in words is "two hundred sixty-eight million, six hundred seventy-three thousand, two hundred nine".