66362563 has 2 divisors, whose sum is σ = 66362564. Its totient is φ = 66362562.

The previous prime is 66362561. The next prime is 66362603. The reversal of 66362563 is 36526366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66362563 - 2¹ = 66362561 is a prime.

Together with 66362561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66362561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33181281 + 33181282.

It is an arithmetic number, because the mean of its divisors is an integer number (33181282).

Almost surely, 2^66362563 is an apocalyptic number.

66362563 is a deficient number, since it is larger than the sum of its proper divisors (1).

66362563 is an equidigital number, since it uses as much as digits as its factorization.

66362563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 37.

The square root of 66362563 is about 8146.3220535405. The cubic root of 66362563 is about 404.8626532188.

The spelling of 66362563 in words is "sixty-six million, three hundred sixty-two thousand, five hundred sixty-three".