238613 has 4 divisors (see below), whose sum is σ = 245100. Its totient is φ = 232128.

The previous prime is 238591. The next prime is 238627. The reversal of 238613 is 316832.

238613 is nontrivially palindromic in base 6.

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

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 14884 = 473^2 + 122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238673) 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, 3188 + ... + 3261.

It is an arithmetic number, because the mean of its divisors is an integer number (61275).

2²³⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

238613 is a deficient number, since it is larger than the sum of its proper divisors (6487).

238613 is an equidigital number, since it uses as much as digits as its factorization.

238613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486.

The product of its digits is 864, while the sum is 23.

The square root of 238613 is about 488.4802964297. The cubic root of 238613 is about 62.0247039951.

The spelling of 238613 in words is "two hundred thirty-eight thousand, six hundred thirteen".