338687 has 2 divisors, whose sum is σ = 338688. Its totient is φ = 338686.

The previous prime is 338683. The next prime is 338707. The reversal of 338687 is 786833.

It is a weak prime.

It is an emirp because it is prime and its reverse (786833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338687 - 2² = 338683 is a prime.

It is a super-2 number, since 2×338687² = 229417767938, which contains 22 as substring.

It is a Chen prime.

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 338687.

It is not a weakly prime, because it can be changed into another prime (338683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169343 + 169344.

It is an arithmetic number, because the mean of its divisors is an integer number (169344).

2³³⁸⁶⁸⁷ is an apocalyptic number.

338687 is a deficient number, since it is larger than the sum of its proper divisors (1).

338687 is an equidigital number, since it uses as much as digits as its factorization.

338687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 338687 is about 581.9682121903. The cubic root of 338687 is about 69.7053601993.

The spelling of 338687 in words is "three hundred thirty-eight thousand, six hundred eighty-seven".