338686 has 4 divisors (see below), whose sum is σ = 508032. Its totient is φ = 169342.

The previous prime is 338683. The next prime is 338687. The reversal of 338686 is 686833.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×338686² = 229416413192, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 84670 + ... + 84673.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2³³⁸⁶⁸⁶ is an apocalyptic number.

338686 is a deficient number, since it is larger than the sum of its proper divisors (169346).

338686 is a wasteful number, since it uses less digits than its factorization.

338686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169345.

The product of its digits is 20736, while the sum is 34.

The square root of 338686 is about 581.9673530362. The cubic root of 338686 is about 69.7052915957.

It can be divided in two parts, 338 and 686, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 338686 in words is "three hundred thirty-eight thousand, six hundred eighty-six".