268678 has 4 divisors (see below), whose sum is σ = 403020. Its totient is φ = 134338.

The previous prime is 268661. The next prime is 268693. The reversal of 268678 is 876862.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67168 + ... + 67171.

It is an arithmetic number, because the mean of its divisors is an integer number (100755).

2²⁶⁸⁶⁷⁸ is an apocalyptic number.

268678 is a deficient number, since it is larger than the sum of its proper divisors (134342).

268678 is a wasteful number, since it uses less digits than its factorization.

268678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134341.

The product of its digits is 32256, while the sum is 37.

The square root of 268678 is about 518.3415862151. The cubic root of 268678 is about 64.5273805591.

It can be divided in two parts, 268 and 678, that added together give a triangular number (946 = T₄₃).

The spelling of 268678 in words is "two hundred sixty-eight thousand, six hundred seventy-eight".