66063983 has 2 divisors, whose sum is σ = 66063984. Its totient is φ = 66063982.

The previous prime is 66063967. The next prime is 66064043. The reversal of 66063983 is 38936066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66063983 - 2⁴ = 66063967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66063983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66063913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33031991 + 33031992.

It is an arithmetic number, because the mean of its divisors is an integer number (33031992).

Almost surely, 2^66063983 is an apocalyptic number.

66063983 is a deficient number, since it is larger than the sum of its proper divisors (1).

66063983 is an equidigital number, since it uses as much as digits as its factorization.

66063983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 66063983 is about 8127.9753321476. The cubic root of 66063983 is about 404.2545511274.

The spelling of 66063983 in words is "sixty-six million, sixty-three thousand, nine hundred eighty-three".