684373 has 2 divisors, whose sum is σ = 684374. Its totient is φ = 684372.

The previous prime is 684349. The next prime is 684379. The reversal of 684373 is 373486.

684373 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., 651249 + 33124 = 807^2 + 182^2 .

It is a cyclic number.

It is not a de Polignac number, because 684373 - 2⁹ = 683861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342186 + 342187.

It is an arithmetic number, because the mean of its divisors is an integer number (342187).

2⁶⁸⁴³⁷³ is an apocalyptic number.

It is an amenable number.

684373 is a deficient number, since it is larger than the sum of its proper divisors (1).

684373 is an equidigital number, since it uses as much as digits as its factorization.

684373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 684373 is about 827.2683965921. The cubic root of 684373 is about 88.1246940955.

The spelling of 684373 in words is "six hundred eighty-four thousand, three hundred seventy-three".