338643 has 12 divisors (see below), whose sum is σ = 494208. Its totient is φ = 223440.

The previous prime is 338609. The next prime is 338659. The reversal of 338643 is 346833.

It is not a de Polignac number, because 338643 - 2⁶ = 338579 is a prime.

It is a super-2 number, since 2×338643² = 229358162898, which contains 22 as substring.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1621 + ... + 1817.

It is an arithmetic number, because the mean of its divisors is an integer number (41184).

2³³⁸⁶⁴³ is an apocalyptic number.

338643 is a deficient number, since it is larger than the sum of its proper divisors (155565).

338643 is a wasteful number, since it uses less digits than its factorization.

338643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 391 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 338643 is about 581.9304082105. The cubic root of 338643 is about 69.7023415137.

The spelling of 338643 in words is "three hundred thirty-eight thousand, six hundred forty-three".