338666 has 8 divisors (see below), whose sum is σ = 510564. Its totient is φ = 168480.

The previous prime is 338659. The next prime is 338669. The reversal of 338666 is 666833.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 286225 + 52441 = 535^2 + 229^2 .

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

It is a super-2 number, since 2×338666² = 229389319112, which contains 22 as substring.

338666 is a modest number, since divided by 666 gives 338 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (338669) 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, 356 + ... + 896.

2³³⁸⁶⁶⁶ is an apocalyptic number.

338666 is a deficient number, since it is larger than the sum of its proper divisors (171898).

338666 is a wasteful number, since it uses less digits than its factorization.

338666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 15552, while the sum is 32.

The square root of 338666 is about 581.9501696881. The cubic root of 338666 is about 69.7039194956.

The spelling of 338666 in words is "three hundred thirty-eight thousand, six hundred sixty-six".