678367 has 2 divisors, whose sum is σ = 678368. Its totient is φ = 678366.

The previous prime is 678343. The next prime is 678371. The reversal of 678367 is 763876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678367 - 2¹⁵ = 645599 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

678367 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678767) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339183 + 339184.

It is an arithmetic number, because the mean of its divisors is an integer number (339184).

2⁶⁷⁸³⁶⁷ is an apocalyptic number.

678367 is a deficient number, since it is larger than the sum of its proper divisors (1).

678367 is an equidigital number, since it uses as much as digits as its factorization.

678367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 678367 is about 823.6303782644. The cubic root of 678367 is about 87.8661446385.

The spelling of 678367 in words is "six hundred seventy-eight thousand, three hundred sixty-seven".