338705 has 4 divisors (see below), whose sum is σ = 406452. Its totient is φ = 270960.

The previous prime is 338687. The next prime is 338707. The reversal of 338705 is 507833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507833 = 523 ⋅971.

It can be written as a sum of positive squares in 2 ways, for example, as 165649 + 173056 = 407^2 + 416^2 .

It is not a de Polignac number, because 338705 - 2⁸ = 338449 is a prime.

It is a super-2 number, since 2×338705² = 229442154050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33866 + ... + 33875.

It is an arithmetic number, because the mean of its divisors is an integer number (101613).

2³³⁸⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

338705 is a deficient number, since it is larger than the sum of its proper divisors (67747).

338705 is an equidigital number, since it uses as much as digits as its factorization.

338705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67746.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 338705 is about 581.9836767470. The cubic root of 338705 is about 69.7065950408.

The spelling of 338705 in words is "three hundred thirty-eight thousand, seven hundred five".