678326 has 12 divisors (see below), whose sum is σ = 1118796. Its totient is φ = 308220.

The previous prime is 678299. The next prime is 678329. The reversal of 678326 is 623876.

It is a junction number, because it is equal to n+sod(n) for n = 678292 and 678301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678329) by changing a digit.

678326 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 5 ways as a sum of consecutive naturals, for example, 1160 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (93233).

2⁶⁷⁸³²⁶ is an apocalyptic number.

678326 is a deficient number, since it is larger than the sum of its proper divisors (440470).

678326 is a wasteful number, since it uses less digits than its factorization.

678326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827 (or 2816 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 678326 is about 823.6054880827. The cubic root of 678326 is about 87.8643744146.

The spelling of 678326 in words is "six hundred seventy-eight thousand, three hundred twenty-six".