678364 has 6 divisors (see below), whose sum is σ = 1187144. Its totient is φ = 339180.

The previous prime is 678343. The next prime is 678367. The reversal of 678364 is 463876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678367) by changing a digit.

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, 84792 + ... + 84799.

2⁶⁷⁸³⁶⁴ is an apocalyptic number.

It is an amenable number.

678364 is a deficient number, since it is larger than the sum of its proper divisors (508780).

678364 is a wasteful number, since it uses less digits than its factorization.

678364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169595 (or 169593 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 678364 is about 823.6285570571. The cubic root of 678364 is about 87.8660151124.

The spelling of 678364 in words is "six hundred seventy-eight thousand, three hundred sixty-four".