66122273 has 4 divisors (see below), whose sum is σ = 75568320. Its totient is φ = 56676228.

The previous prime is 66122267. The next prime is 66122297. The reversal of 66122273 is 37222166.

66122273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37222166 = 2 ⋅18611083.

It is not a de Polignac number, because 66122273 - 2⁴ = 66122257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66122213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4723013 + ... + 4723026.

It is an arithmetic number, because the mean of its divisors is an integer number (18892080).

Almost surely, 2^66122273 is an apocalyptic number.

It is an amenable number.

66122273 is a deficient number, since it is larger than the sum of its proper divisors (9446047).

66122273 is an equidigital number, since it uses as much as digits as its factorization.

66122273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446046.

The product of its digits is 6048, while the sum is 29.

The square root of 66122273 is about 8131.5603053781. The cubic root of 66122273 is about 404.3734110050.

The spelling of 66122273 in words is "sixty-six million, one hundred twenty-two thousand, two hundred seventy-three".