66223343 has 2 divisors, whose sum is σ = 66223344. Its totient is φ = 66223342.

The previous prime is 66223331. The next prime is 66223351. The reversal of 66223343 is 34332266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66223343 - 2¹⁶ = 66157807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66223363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33111671 + 33111672.

It is an arithmetic number, because the mean of its divisors is an integer number (33111672).

Almost surely, 2^66223343 is an apocalyptic number.

66223343 is a deficient number, since it is larger than the sum of its proper divisors (1).

66223343 is an equidigital number, since it uses as much as digits as its factorization.

66223343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 29.

The square root of 66223343 is about 8137.7726068010. The cubic root of 66223343 is about 404.5793386637.

It can be divided in two parts, 66223 and 343, that added together give a palindrome (66566).

The spelling of 66223343 in words is "sixty-six million, two hundred twenty-three thousand, three hundred forty-three".