66202001 has 2 divisors, whose sum is σ = 66202002. Its totient is φ = 66202000.

The previous prime is 66201979. The next prime is 66202007. The reversal of 66202001 is 10020266.

66202001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65044225 + 1157776 = 8065^2 + 1076^2 .

It is a cyclic number.

It is not a de Polignac number, because 66202001 - 2¹⁰ = 66200977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (66202007) 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, 33101000 + 33101001.

It is an arithmetic number, because the mean of its divisors is an integer number (33101001).

Almost surely, 2^66202001 is an apocalyptic number.

It is an amenable number.

66202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66202001 is an equidigital number, since it uses as much as digits as its factorization.

66202001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 66202001 is about 8136.4612086582. The cubic root of 66202001 is about 404.5358723190.

Adding to 66202001 its reverse (10020266), we get a palindrome (76222267).

The spelling of 66202001 in words is "sixty-six million, two hundred two thousand, one".