238265665 has 16 divisors (see below), whose sum is σ = 312290496. Its totient is φ = 173073600.

The previous prime is 238265609. The next prime is 238265683. The reversal of 238265665 is 566562832.

It is a happy number.

It is not a de Polignac number, because 238265665 - 2¹⁷ = 238134593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54034 + ... + 58276.

It is an arithmetic number, because the mean of its divisors is an integer number (19518156).

Almost surely, 2^238265665 is an apocalyptic number.

It is an amenable number.

238265665 is a deficient number, since it is larger than the sum of its proper divisors (74024831).

238265665 is a wasteful number, since it uses less digits than its factorization.

238265665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280.

The product of its digits is 518400, while the sum is 43.

The square root of 238265665 is about 15435.8564712166. The cubic root of 238265665 is about 619.9459413498.

The spelling of 238265665 in words is "two hundred thirty-eight million, two hundred sixty-five thousand, six hundred sixty-five".