66303277 has 2 divisors, whose sum is σ = 66303278. Its totient is φ = 66303276.

The previous prime is 66303253. The next prime is 66303311. The reversal of 66303277 is 77230366.

It is a happy number.

It is an a-pointer prime, because the next prime (66303311) can be obtained adding 66303277 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44903401 + 21399876 = 6701^2 + 4626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66303277 is a prime.

It is a super-2 number, since 2×66303277² = 8792249081877458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66303577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33151638 + 33151639.

It is an arithmetic number, because the mean of its divisors is an integer number (33151639).

Almost surely, 2^66303277 is an apocalyptic number.

It is an amenable number.

66303277 is a deficient number, since it is larger than the sum of its proper divisors (1).

66303277 is an equidigital number, since it uses as much as digits as its factorization.

66303277 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 66303277 is about 8142.6824204312. The cubic root of 66303277 is about 404.7420539058.

The spelling of 66303277 in words is "sixty-six million, three hundred three thousand, two hundred seventy-seven".