66273353 has 2 divisors, whose sum is σ = 66273354. Its totient is φ = 66273352.

The previous prime is 66273341. The next prime is 66273391. The reversal of 66273353 is 35337266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44249104 + 22024249 = 6652^2 + 4693^2 .

It is a cyclic number.

It is not a de Polignac number, because 66273353 - 2⁶ = 66273289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (66273953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33136676 + 33136677.

It is an arithmetic number, because the mean of its divisors is an integer number (33136677).

Almost surely, 2^66273353 is an apocalyptic number.

It is an amenable number.

66273353 is a deficient number, since it is larger than the sum of its proper divisors (1).

66273353 is an equidigital number, since it uses as much as digits as its factorization.

66273353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 35.

The square root of 66273353 is about 8140.8447350383. The cubic root of 66273353 is about 404.6811553385.

The spelling of 66273353 in words is "sixty-six million, two hundred seventy-three thousand, three hundred fifty-three".