66546763 has 2 divisors, whose sum is σ = 66546764. Its totient is φ = 66546762.

The previous prime is 66546737. The next prime is 66546769. The reversal of 66546763 is 36764566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66546763 - 2⁹ = 66546251 is a prime.

It is not a weakly prime, because it can be changed into another prime (66546769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33273381 + 33273382.

It is an arithmetic number, because the mean of its divisors is an integer number (33273382).

Almost surely, 2^66546763 is an apocalyptic number.

66546763 is a deficient number, since it is larger than the sum of its proper divisors (1).

66546763 is an equidigital number, since it uses as much as digits as its factorization.

66546763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 43.

The square root of 66546763 is about 8157.6199347604. The cubic root of 66546763 is about 405.2368943803.

The spelling of 66546763 in words is "sixty-six million, five hundred forty-six thousand, seven hundred sixty-three".