66570241 has 2 divisors, whose sum is σ = 66570242. Its totient is φ = 66570240.

The previous prime is 66570223. The next prime is 66570263. The reversal of 66570241 is 14207566.

It is a happy number.

66570241 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., 49056016 + 17514225 = 7004^2 + 4185^2 .

It is a cyclic number.

It is not a de Polignac number, because 66570241 - 2⁵ = 66570209 is a prime.

It is not a weakly prime, because it can be changed into another prime (66570841) 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, 33285120 + 33285121.

It is an arithmetic number, because the mean of its divisors is an integer number (33285121).

Almost surely, 2^66570241 is an apocalyptic number.

It is an amenable number.

66570241 is a deficient number, since it is larger than the sum of its proper divisors (1).

66570241 is an equidigital number, since it uses as much as digits as its factorization.

66570241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 66570241 is about 8159.0588305270. The cubic root of 66570241 is about 405.2845452487.

The spelling of 66570241 in words is "sixty-six million, five hundred seventy thousand, two hundred forty-one".