66297863 has 2 divisors, whose sum is σ = 66297864. Its totient is φ = 66297862.

The previous prime is 66297839. The next prime is 66297899. The reversal of 66297863 is 36879266.

66297863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66297863 - 2¹² = 66293767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66297823) 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 as a sum of consecutive naturals, namely, 33148931 + 33148932.

It is an arithmetic number, because the mean of its divisors is an integer number (33148932).

Almost surely, 2^66297863 is an apocalyptic number.

66297863 is a deficient number, since it is larger than the sum of its proper divisors (1).

66297863 is an equidigital number, since it uses as much as digits as its factorization.

66297863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 66297863 is about 8142.3499679147. The cubic root of 66297863 is about 404.7310371898.

The spelling of 66297863 in words is "sixty-six million, two hundred ninety-seven thousand, eight hundred sixty-three".