66241223 has 2 divisors, whose sum is σ = 66241224. Its totient is φ = 66241222.

The previous prime is 66241183. The next prime is 66241237. The reversal of 66241223 is 32214266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66241223 - 2¹⁰ = 66240199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66241192 and 66241201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66241523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33120611 + 33120612.

It is an arithmetic number, because the mean of its divisors is an integer number (33120612).

Almost surely, 2^66241223 is an apocalyptic number.

66241223 is a deficient number, since it is larger than the sum of its proper divisors (1).

66241223 is an equidigital number, since it uses as much as digits as its factorization.

66241223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 66241223 is about 8138.8711133670. The cubic root of 66241223 is about 404.6157469115.

Adding to 66241223 its reverse (32214266), we get a palindrome (98455489).

The spelling of 66241223 in words is "sixty-six million, two hundred forty-one thousand, two hundred twenty-three".