66063967 has 2 divisors, whose sum is σ = 66063968. Its totient is φ = 66063966.

The previous prime is 66063941. The next prime is 66063983. The reversal of 66063967 is 76936066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66063967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66063367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33031983 + 33031984.

It is an arithmetic number, because the mean of its divisors is an integer number (33031984).

Almost surely, 2^66063967 is an apocalyptic number.

66063967 is a deficient number, since it is larger than the sum of its proper divisors (1).

66063967 is an equidigital number, since it uses as much as digits as its factorization.

66063967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 66063967 is about 8127.9743478926. The cubic root of 66063967 is about 404.2545184920.

The spelling of 66063967 in words is "sixty-six million, sixty-three thousand, nine hundred sixty-seven".