66041461 has 2 divisors, whose sum is σ = 66041462. Its totient is φ = 66041460.

The previous prime is 66041453. The next prime is 66041489. The reversal of 66041461 is 16414066.

It is an a-pointer prime, because the next prime (66041489) can be obtained adding 66041461 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 269361 = 8110^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 66041461 - 2³ = 66041453 is a prime.

It is a super-2 number, since 2×66041461² = 8722949142029042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66041401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33020730 + 33020731.

It is an arithmetic number, because the mean of its divisors is an integer number (33020731).

Almost surely, 2^66041461 is an apocalyptic number.

It is an amenable number.

66041461 is a deficient number, since it is larger than the sum of its proper divisors (1).

66041461 is an equidigital number, since it uses as much as digits as its factorization.

66041461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66041461 is about 8126.5897521654. The cubic root of 66041461 is about 404.2086075062.

The spelling of 66041461 in words is "sixty-six million, forty-one thousand, four hundred sixty-one".