678101 has 2 divisors, whose sum is σ = 678102. Its totient is φ = 678100.

The previous prime is 678077. The next prime is 678103. The reversal of 678101 is 101876.

678101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391876 + 286225 = 626^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 678101 - 2⁶ = 678037 is a prime.

Together with 678103, it forms a pair of twin primes.

It is a Chen prime.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678101.

It is not a weakly prime, because it can be changed into another prime (678103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339050 + 339051.

It is an arithmetic number, because the mean of its divisors is an integer number (339051).

2⁶⁷⁸¹⁰¹ is an apocalyptic number.

It is an amenable number.

678101 is a deficient number, since it is larger than the sum of its proper divisors (1).

678101 is an equidigital number, since it uses as much as digits as its factorization.

678101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 678101 is about 823.4688822293. The cubic root of 678101 is about 87.8546585010.

Adding to 678101 its reverse (101876), we get a palindrome (779977).

The spelling of 678101 in words is "six hundred seventy-eight thousand, one hundred one".