338681 has 4 divisors (see below), whose sum is σ = 387072. Its totient is φ = 290292.

The previous prime is 338669. The next prime is 338683. The reversal of 338681 is 186833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186833 = 83 ⋅2251.

It is a cyclic number.

It is not a de Polignac number, because 338681 - 2¹⁸ = 76537 is a prime.

It is a super-2 number, since 2×338681² = 229409639522, which contains 22 as substring.

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 338681.

It is not an unprimeable number, because it can be changed into a prime (338683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24185 + ... + 24198.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2³³⁸⁶⁸¹ is an apocalyptic number.

It is an amenable number.

338681 is a deficient number, since it is larger than the sum of its proper divisors (48391).

338681 is an equidigital number, since it uses as much as digits as its factorization.

338681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48390.

The product of its digits is 3456, while the sum is 29.

The square root of 338681 is about 581.9630572468. The cubic root of 338681 is about 69.7049485758.

The spelling of 338681 in words is "three hundred thirty-eight thousand, six hundred eighty-one".