66560141 has 2 divisors, whose sum is σ = 66560142. Its totient is φ = 66560140.

The previous prime is 66560119. The next prime is 66560147. The reversal of 66560141 is 14106566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66422500 + 137641 = 8150^2 + 371^2 .

It is a cyclic number.

It is not a de Polignac number, because 66560141 - 2¹⁰ = 66559117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66560147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33280070 + 33280071.

It is an arithmetic number, because the mean of its divisors is an integer number (33280071).

Almost surely, 2^66560141 is an apocalyptic number.

It is an amenable number.

66560141 is a deficient number, since it is larger than the sum of its proper divisors (1).

66560141 is an equidigital number, since it uses as much as digits as its factorization.

66560141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 66560141 is about 8158.4398631111. The cubic root of 66560141 is about 405.2640476967.

It can be divided in two parts, 665 and 60141, that added together give a palindrome (60806).

The spelling of 66560141 in words is "sixty-six million, five hundred sixty thousand, one hundred forty-one".