678323 has 4 divisors (see below), whose sum is σ = 689880. Its totient is φ = 666768.

The previous prime is 678299. The next prime is 678329. The reversal of 678323 is 323876.

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

It is a cyclic number.

It is not a de Polignac number, because 678323 - 2¹² = 674227 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678329) 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 in 3 ways as a sum of consecutive naturals, for example, 5690 + ... + 5807.

It is an arithmetic number, because the mean of its divisors is an integer number (172470).

2⁶⁷⁸³²³ is an apocalyptic number.

678323 is a deficient number, since it is larger than the sum of its proper divisors (11557).

678323 is a wasteful number, since it uses less digits than its factorization.

678323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556.

The product of its digits is 6048, while the sum is 29.

The square root of 678323 is about 823.6036668204. The cubic root of 678323 is about 87.8642448832.

It can be divided in two parts, 678 and 323, that added together give a palindrome (1001).

The spelling of 678323 in words is "six hundred seventy-eight thousand, three hundred twenty-three".