66032773 has 2 divisors, whose sum is σ = 66032774. Its totient is φ = 66032772.

The previous prime is 66032737. The next prime is 66032779. The reversal of 66032773 is 37723066.

It is a happy number.

Together with previous prime (66032737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41757444 + 24275329 = 6462^2 + 4927^2 .

It is a cyclic number.

It is not a de Polignac number, because 66032773 - 2⁹ = 66032261 is a prime.

It is a super-2 number, since 2×66032773² = 8720654220139058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66032779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33016386 + 33016387.

It is an arithmetic number, because the mean of its divisors is an integer number (33016387).

Almost surely, 2^66032773 is an apocalyptic number.

It is an amenable number.

66032773 is a deficient number, since it is larger than the sum of its proper divisors (1).

66032773 is an equidigital number, since it uses as much as digits as its factorization.

66032773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 34.

The square root of 66032773 is about 8126.0551930196. The cubic root of 66032773 is about 404.1908816800.

It can be divided in two parts, 660 and 32773, that added together give a palindrome (33433).

The spelling of 66032773 in words is "sixty-six million, thirty-two thousand, seven hundred seventy-three".