66532241 has 2 divisors, whose sum is σ = 66532242. Its totient is φ = 66532240.

The previous prime is 66532201. The next prime is 66532247. The reversal of 66532241 is 14223566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61952641 + 4579600 = 7871^2 + 2140^2 .

It is a cyclic number.

It is not a de Polignac number, because 66532241 - 2²² = 62337937 is a prime.

It is not a weakly prime, because it can be changed into another prime (66532247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33266120 + 33266121.

It is an arithmetic number, because the mean of its divisors is an integer number (33266121).

Almost surely, 2^66532241 is an apocalyptic number.

It is an amenable number.

66532241 is a deficient number, since it is larger than the sum of its proper divisors (1).

66532241 is an equidigital number, since it uses as much as digits as its factorization.

66532241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 66532241 is about 8156.7297981483. The cubic root of 66532241 is about 405.2074149684.

The spelling of 66532241 in words is "sixty-six million, five hundred thirty-two thousand, two hundred forty-one".