684119 has 2 divisors, whose sum is σ = 684120. Its totient is φ = 684118.

The previous prime is 684113. The next prime is 684121. The reversal of 684119 is 911486.

684119 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 is a cyclic number.

It is not a de Polignac number, because 684119 - 2⁸ = 683863 is a prime.

It is a super-2 number, since 2×684119² = 936037612322, which contains 22 as substring.

Together with 684121, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 684091 and 684100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342059 + 342060.

It is an arithmetic number, because the mean of its divisors is an integer number (342060).

2⁶⁸⁴¹¹⁹ is an apocalyptic number.

684119 is a deficient number, since it is larger than the sum of its proper divisors (1).

684119 is an equidigital number, since it uses as much as digits as its factorization.

684119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 684119 is about 827.1148650581. The cubic root of 684119 is about 88.1137904693.

The spelling of 684119 in words is "six hundred eighty-four thousand, one hundred nineteen".