678229 has 2 divisors, whose sum is σ = 678230. Its totient is φ = 678228.

The previous prime is 678221. The next prime is 678253. The reversal of 678229 is 922876.

678229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 677329 + 900 = 823^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 678229 - 2³ = 678221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678194 and 678203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339114 + 339115.

It is an arithmetic number, because the mean of its divisors is an integer number (339115).

2⁶⁷⁸²²⁹ is an apocalyptic number.

It is an amenable number.

678229 is a deficient number, since it is larger than the sum of its proper divisors (1).

678229 is an equidigital number, since it uses as much as digits as its factorization.

678229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 678229 is about 823.5465985602. The cubic root of 678229 is about 87.8601860398.

The spelling of 678229 in words is "six hundred seventy-eight thousand, two hundred twenty-nine".