66498071 has 2 divisors, whose sum is σ = 66498072. Its totient is φ = 66498070.

The previous prime is 66498031. The next prime is 66498079. The reversal of 66498071 is 17089466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66498071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66498079) 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, 33249035 + 33249036.

It is an arithmetic number, because the mean of its divisors is an integer number (33249036).

Almost surely, 2^66498071 is an apocalyptic number.

66498071 is a deficient number, since it is larger than the sum of its proper divisors (1).

66498071 is an equidigital number, since it uses as much as digits as its factorization.

66498071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 66498071 is about 8154.6349397137. The cubic root of 66498071 is about 405.1380335267.

The spelling of 66498071 in words is "sixty-six million, four hundred ninety-eight thousand, seventy-one".