238664 has 8 divisors (see below), whose sum is σ = 447510. Its totient is φ = 119328.

The previous prime is 238657. The next prime is 238673. The reversal of 238664 is 466832.

It can be written as a sum of positive squares in only one way, i.e., 209764 + 28900 = 458^2 + 170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14909 + ... + 14924.

2²³⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

238664 is a deficient number, since it is larger than the sum of its proper divisors (208846).

238664 is a wasteful number, since it uses less digits than its factorization.

238664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29839 (or 29835 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 238664 is about 488.5324963603. The cubic root of 238664 is about 62.0291226347.

The spelling of 238664 in words is "two hundred thirty-eight thousand, six hundred sixty-four".