684037 has 2 divisors, whose sum is σ = 684038. Its totient is φ = 684036.

The previous prime is 684017. The next prime is 684053. The reversal of 684037 is 730486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 641601 + 42436 = 801^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 684037 - 2⁷ = 683909 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 683996 and 684014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342018 + 342019.

It is an arithmetic number, because the mean of its divisors is an integer number (342019).

2⁶⁸⁴⁰³⁷ is an apocalyptic number.

It is an amenable number.

684037 is a deficient number, since it is larger than the sum of its proper divisors (1).

684037 is an equidigital number, since it uses as much as digits as its factorization.

684037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 684037 is about 827.0652936740. The cubic root of 684037 is about 88.1102698247.

The spelling of 684037 in words is "six hundred eighty-four thousand, thirty-seven".