268673789 has 4 divisors (see below), whose sum is σ = 269788860. Its totient is φ = 267558720.

The previous prime is 268673771. The next prime is 268673791. The reversal of 268673789 is 987376862.

It is a happy number.

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 167832025 + 100841764 = 12955^2 + 10042^2 .

It is a cyclic number.

It is not a de Polignac number, because 268673789 - 2¹⁶ = 268608253 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 (268673689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557174 + ... + 557655.

It is an arithmetic number, because the mean of its divisors is an integer number (67447215).

Almost surely, 2^268673789 is an apocalyptic number.

It is an amenable number.

268673789 is a deficient number, since it is larger than the sum of its proper divisors (1115071).

268673789 is a wasteful number, since it uses less digits than its factorization.

268673789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115070.

The product of its digits is 6096384, while the sum is 56.

The square root of 268673789 is about 16391.2717322360. The cubic root of 268673789 is about 645.2704344406.

The spelling of 268673789 in words is "two hundred sixty-eight million, six hundred seventy-three thousand, seven hundred eighty-nine".