66435241 has 2 divisors, whose sum is σ = 66435242. Its totient is φ = 66435240.

The previous prime is 66435233. The next prime is 66435251. The reversal of 66435241 is 14253466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51194025 + 15241216 = 7155^2 + 3904^2 .

It is a cyclic number.

It is not a de Polignac number, because 66435241 - 2³ = 66435233 is a prime.

It is not a weakly prime, because it can be changed into another prime (66435221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33217620 + 33217621.

It is an arithmetic number, because the mean of its divisors is an integer number (33217621).

Almost surely, 2^66435241 is an apocalyptic number.

It is an amenable number.

66435241 is a deficient number, since it is larger than the sum of its proper divisors (1).

66435241 is an equidigital number, since it uses as much as digits as its factorization.

66435241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 66435241 is about 8150.7816189615. The cubic root of 66435241 is about 405.0103965222.

The spelling of 66435241 in words is "sixty-six million, four hundred thirty-five thousand, two hundred forty-one".