66082187 has 2 divisors, whose sum is σ = 66082188. Its totient is φ = 66082186.

The previous prime is 66082139. The next prime is 66082189. The reversal of 66082187 is 78128066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66082187 - 2⁸ = 66081931 is a prime.

Together with 66082189, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66082187.

It is not a weakly prime, because it can be changed into another prime (66082189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33041093 + 33041094.

It is an arithmetic number, because the mean of its divisors is an integer number (33041094).

Almost surely, 2^66082187 is an apocalyptic number.

66082187 is a deficient number, since it is larger than the sum of its proper divisors (1).

66082187 is an equidigital number, since it uses as much as digits as its factorization.

66082187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 66082187 is about 8129.0950910910. The cubic root of 66082187 is about 404.2916786397.

The spelling of 66082187 in words is "sixty-six million, eighty-two thousand, one hundred eighty-seven".