230661 has 8 divisors (see below), whose sum is σ = 341760. Its totient is φ = 153756.

The previous prime is 230653. The next prime is 230663. The reversal of 230661 is 166032.

It is a happy number.

230661 is a `hidden beast` number, since 2 + 3 + 0 + 661 = 666.

230661 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 230661 - 2³ = 230653 is a prime.

230661 is strictly pandigital in base 7.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230663) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4245 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (42720).

2²³⁰⁶⁶¹ is an apocalyptic number.

It is an amenable number.

230661 is a deficient number, since it is larger than the sum of its proper divisors (111099).

230661 is an equidigital number, since it uses as much as digits as its factorization.

230661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552 (or 8546 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 230661 is about 480.2717980477. The cubic root of 230661 is about 61.3278947866.

Adding to 230661 its reverse (166032), we get a palindrome (396693).

The spelling of 230661 in words is "two hundred thirty thousand, six hundred sixty-one".