66201011 has 2 divisors, whose sum is σ = 66201012. Its totient is φ = 66201010.

The previous prime is 66200977. The next prime is 66201017. The reversal of 66201011 is 11010266.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66201011 - 2⁶ = 66200947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66201017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33100505 + 33100506.

It is an arithmetic number, because the mean of its divisors is an integer number (33100506).

Almost surely, 2^66201011 is an apocalyptic number.

66201011 is a deficient number, since it is larger than the sum of its proper divisors (1).

66201011 is an equidigital number, since it uses as much as digits as its factorization.

66201011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 66201011 is about 8136.4003711715. The cubic root of 66201011 is about 404.5338558013.

Adding to 66201011 its reverse (11010266), we get a palindrome (77211277).

The spelling of 66201011 in words is "sixty-six million, two hundred one thousand, eleven".