678268 has 6 divisors (see below), whose sum is σ = 1186976. Its totient is φ = 339132.

The previous prime is 678253. The next prime is 678289. The reversal of 678268 is 862876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84780 + ... + 84787.

2⁶⁷⁸²⁶⁸ is an apocalyptic number.

It is an amenable number.

678268 is a deficient number, since it is larger than the sum of its proper divisors (508708).

678268 is a wasteful number, since it uses less digits than its factorization.

678268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169571 (or 169569 counting only the distinct ones).

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

The square root of 678268 is about 823.5702762971. The cubic root of 678268 is about 87.8618700735.

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

The spelling of 678268 in words is "six hundred seventy-eight thousand, two hundred sixty-eight".