223132661 has 2 divisors, whose sum is σ = 223132662. Its totient is φ = 223132660.

The previous prime is 223132649. The next prime is 223132673. The reversal of 223132661 is 166231322.

It is a balanced prime because it is at equal distance from previous prime (223132649) and next prime (223132673).

It can be written as a sum of positive squares in only one way, i.e., 195832036 + 27300625 = 13994^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 223132661 - 2¹⁸ = 222870517 is a prime.

It is a super-3 number, since 3×223132661³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223132661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223132691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111566330 + 111566331.

It is an arithmetic number, because the mean of its divisors is an integer number (111566331).

Almost surely, 2^223132661 is an apocalyptic number.

It is an amenable number.

223132661 is a deficient number, since it is larger than the sum of its proper divisors (1).

223132661 is an equidigital number, since it uses as much as digits as its factorization.

223132661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 223132661 is about 14937.6256814796. The cubic root of 223132661 is about 606.5329257106.

Adding to 223132661 its reverse (166231322), we get a palindrome (389363983).

The spelling of 223132661 in words is "two hundred twenty-three million, one hundred thirty-two thousand, six hundred sixty-one".