238666 has 8 divisors (see below), whose sum is σ = 365760. Its totient is φ = 116748.

The previous prime is 238657. The next prime is 238673. The reversal of 238666 is 666832.

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

It is a super-2 number, since 2×238666² = 113922919112, which contains 22 as substring.

238666 is a modest number, since divided by 666 gives 238 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176 + ... + 1363.

It is an arithmetic number, because the mean of its divisors is an integer number (45720).

2²³⁸⁶⁶⁶ is an apocalyptic number.

238666 is a deficient number, since it is larger than the sum of its proper divisors (127094).

238666 is a wasteful number, since it uses less digits than its factorization.

238666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588.

The product of its digits is 10368, while the sum is 31.

The square root of 238666 is about 488.5345433027. The cubic root of 238666 is about 62.0292959019.

The spelling of 238666 in words is "two hundred thirty-eight thousand, six hundred sixty-six".