230639 has 4 divisors (see below), whose sum is σ = 244224. Its totient is φ = 217056.

The previous prime is 230611. The next prime is 230647. The reversal of 230639 is 936032.

It is a happy number.

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

It is not a de Polignac number, because 230639 - 2⁸ = 230383 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 3⁵ + 6⁶ + 0 + 3¹¹ + 9⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6767 + ... + 6800.

It is an arithmetic number, because the mean of its divisors is an integer number (61056).

2²³⁰⁶³⁹ is an apocalyptic number.

230639 is a deficient number, since it is larger than the sum of its proper divisors (13585).

230639 is a wasteful number, since it uses less digits than its factorization.

230639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13584.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 230639 is about 480.2488938040. The cubic root of 230639 is about 61.3259449460.

The spelling of 230639 in words is "two hundred thirty thousand, six hundred thirty-nine".