66098671 has 2 divisors, whose sum is σ = 66098672. Its totient is φ = 66098670.

The previous prime is 66098651. The next prime is 66098689. The reversal of 66098671 is 17689066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66098671 - 2⁵ = 66098639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66098651) 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, 33049335 + 33049336.

It is an arithmetic number, because the mean of its divisors is an integer number (33049336).

Almost surely, 2^66098671 is an apocalyptic number.

66098671 is a deficient number, since it is larger than the sum of its proper divisors (1).

66098671 is an equidigital number, since it uses as much as digits as its factorization.

66098671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 66098671 is about 8130.1089168596. The cubic root of 66098671 is about 404.3252922869.

The spelling of 66098671 in words is "sixty-six million, ninety-eight thousand, six hundred seventy-one".