684311 has 2 divisors, whose sum is σ = 684312. Its totient is φ = 684310.

The previous prime is 684293. The next prime is 684329. The reversal of 684311 is 113486.

684311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (684293) and next prime (684329).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-684311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342155 + 342156.

It is an arithmetic number, because the mean of its divisors is an integer number (342156).

2⁶⁸⁴³¹¹ is an apocalyptic number.

684311 is a deficient number, since it is larger than the sum of its proper divisors (1).

684311 is an equidigital number, since it uses as much as digits as its factorization.

684311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 684311 is about 827.2309230197. The cubic root of 684311 is about 88.1220328294.

Adding to 684311 its reverse (113486), we get a palindrome (797797).

The spelling of 684311 in words is "six hundred eighty-four thousand, three hundred eleven".