66916363 has 2 divisors, whose sum is σ = 66916364. Its totient is φ = 66916362.

The previous prime is 66916357. The next prime is 66916379. The reversal of 66916363 is 36361966.

66916363 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 66916363 - 2²⁵ = 33361931 is a prime.

It is not a weakly prime, because it can be changed into another prime (66916393) 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, 33458181 + 33458182.

It is an arithmetic number, because the mean of its divisors is an integer number (33458182).

Almost surely, 2^66916363 is an apocalyptic number.

66916363 is a deficient number, since it is larger than the sum of its proper divisors (1).

66916363 is an equidigital number, since it uses as much as digits as its factorization.

66916363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 40.

The square root of 66916363 is about 8180.2422335772. The cubic root of 66916363 is about 405.9857368379.

The spelling of 66916363 in words is "sixty-six million, nine hundred sixteen thousand, three hundred sixty-three".