66110549 has 2 divisors, whose sum is σ = 66110550. Its totient is φ = 66110548.

The previous prime is 66110543. The next prime is 66110587. The reversal of 66110549 is 94501166.

66110549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55502500 + 10608049 = 7450^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 66110549 - 2⁸ = 66110293 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 (66110543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33055274 + 33055275.

It is an arithmetic number, because the mean of its divisors is an integer number (33055275).

Almost surely, 2^66110549 is an apocalyptic number.

It is an amenable number.

66110549 is a deficient number, since it is larger than the sum of its proper divisors (1).

66110549 is an equidigital number, since it uses as much as digits as its factorization.

66110549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 66110549 is about 8130.8393785636. The cubic root of 66110549 is about 404.3495100617.

The spelling of 66110549 in words is "sixty-six million, one hundred ten thousand, five hundred forty-nine".