683687 has 2 divisors, whose sum is σ = 683688. Its totient is φ = 683686.

The previous prime is 683681. The next prime is 683693. The reversal of 683687 is 786386.

It is a balanced prime because it is at equal distance from previous prime (683681) and next prime (683693).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 683687.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 683687.

It is not a weakly prime, because it can be changed into another prime (683681) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341843 + 341844.

It is an arithmetic number, because the mean of its divisors is an integer number (341844).

2⁶⁸³⁶⁸⁷ is an apocalyptic number.

683687 is a deficient number, since it is larger than the sum of its proper divisors (1).

683687 is an equidigital number, since it uses as much as digits as its factorization.

683687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 683687 is about 826.8536750841. The cubic root of 683687 is about 88.0952395191.

The spelling of 683687 in words is "six hundred eighty-three thousand, six hundred eighty-seven".