338645 has 8 divisors (see below), whose sum is σ = 411480. Its totient is φ = 267520.

The previous prime is 338609. The next prime is 338659. The reversal of 338645 is 546833.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 323761 = 122^2 + 569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 338645 - 2⁶ = 338581 is a prime.

It is a super-2 number, since 2×338645² = 229360872050, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (51435).

2³³⁸⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

338645 is a deficient number, since it is larger than the sum of its proper divisors (72835).

338645 is an equidigital number, since it uses as much as digits as its factorization.

338645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855.

The product of its digits is 8640, while the sum is 29.

The square root of 338645 is about 581.9321266265. The cubic root of 338645 is about 69.7024787324.

The spelling of 338645 in words is "three hundred thirty-eight thousand, six hundred forty-five".