678103 has 2 divisors, whose sum is σ = 678104. Its totient is φ = 678102.

The previous prime is 678101. The next prime is 678133. The reversal of 678103 is 301876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678103 - 2¹ = 678101 is a prime.

Together with 678101, it forms a pair of twin primes.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678101) 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, 339051 + 339052.

It is an arithmetic number, because the mean of its divisors is an integer number (339052).

2⁶⁷⁸¹⁰³ is an apocalyptic number.

678103 is a deficient number, since it is larger than the sum of its proper divisors (1).

678103 is an equidigital number, since it uses as much as digits as its factorization.

678103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 678103 is about 823.4700966034. The cubic root of 678103 is about 87.8547448741.

Adding to 678103 its reverse (301876), we get a palindrome (979979).

The spelling of 678103 in words is "six hundred seventy-eight thousand, one hundred three".