2230661 has 4 divisors (see below), whose sum is σ = 2261292. Its totient is φ = 2200032.

The previous prime is 2230643. The next prime is 2230663. The reversal of 2230661 is 1660322.

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 630436 + 1600225 = 794^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2230661 - 2⁶ = 2230597 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 (2230663) 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 3 ways as a sum of consecutive naturals, for example, 15206 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (565323).

2^2230661 is an apocalyptic number.

It is an amenable number.

2230661 is a deficient number, since it is larger than the sum of its proper divisors (30631).

2230661 is an equidigital number, since it uses as much as digits as its factorization.

2230661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30630.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2230661 is about 1493.5397550785. The cubic root of 2230661 is about 130.6605628772.

Adding to 2230661 its reverse (1660322), we get a palindrome (3890983).

The spelling of 2230661 in words is "two million, two hundred thirty thousand, six hundred sixty-one".