678023 has 2 divisors, whose sum is σ = 678024.
Its totient is φ = 678022.
The previous prime is 677983. The next prime is 678037. The reversal of 678023 is 320876.
Adding to 678023 its reverse (320876), we get a palindrome (998899).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 678023 - 26 = 677959 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 677983 and 678001.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (678823) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339011 + 339012.
It is an arithmetic number, because the mean of its divisors is an integer number (339012).
2678023 is an apocalyptic number.
678023 is a deficient number, since it is larger than the sum of its proper divisors (1).
678023 is an equidigital number, since it uses as much as digits as its factorization.
678023 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2016, while the sum is 26.
The square root of 678023 is about 823.4215202434.
The cubic root of 678023 is about 87.8512898159.
The spelling of 678023 in words is "six hundred seventy-eight thousand, twenty-three".