66575063 has 2 divisors, whose sum is σ = 66575064. Its totient is φ = 66575062.

The previous prime is 66575057. The next prime is 66575081. The reversal of 66575063 is 36057566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66575063 - 2⁶ = 66574999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66575263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33287531 + 33287532.

It is an arithmetic number, because the mean of its divisors is an integer number (33287532).

Almost surely, 2^66575063 is an apocalyptic number.

66575063 is a deficient number, since it is larger than the sum of its proper divisors (1).

66575063 is an equidigital number, since it uses as much as digits as its factorization.

66575063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 66575063 is about 8159.3543249451. The cubic root of 66575063 is about 405.2943305766.

The spelling of 66575063 in words is "sixty-six million, five hundred seventy-five thousand, sixty-three".