66287113 has 2 divisors, whose sum is σ = 66287114. Its totient is φ = 66287112.

The previous prime is 66287051. The next prime is 66287129. The reversal of 66287113 is 31178266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60964864 + 5322249 = 7808^2 + 2307^2 .

It is a cyclic number.

It is not a de Polignac number, because 66287113 - 2⁹ = 66286601 is a prime.

It is not a weakly prime, because it can be changed into another prime (66287183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33143556 + 33143557.

It is an arithmetic number, because the mean of its divisors is an integer number (33143557).

Almost surely, 2^66287113 is an apocalyptic number.

It is an amenable number.

66287113 is a deficient number, since it is larger than the sum of its proper divisors (1).

66287113 is an equidigital number, since it uses as much as digits as its factorization.

66287113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 66287113 is about 8141.6898123178. The cubic root of 66287113 is about 404.7091606987.

The spelling of 66287113 in words is "sixty-six million, two hundred eighty-seven thousand, one hundred thirteen".