66335201 has 2 divisors, whose sum is σ = 66335202. Its totient is φ = 66335200.

The previous prime is 66335183. The next prime is 66335231. The reversal of 66335201 is 10253366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35521600 + 30813601 = 5960^2 + 5551^2 .

It is a cyclic number.

It is not a de Polignac number, because 66335201 - 2¹⁴ = 66318817 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (66335231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33167600 + 33167601.

It is an arithmetic number, because the mean of its divisors is an integer number (33167601).

Almost surely, 2^66335201 is an apocalyptic number.

It is an amenable number.

66335201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66335201 is an equidigital number, since it uses as much as digits as its factorization.

66335201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 66335201 is about 8144.6424722022. The cubic root of 66335201 is about 404.8070024911.

Adding to 66335201 its reverse (10253366), we get a palindrome (76588567).

The spelling of 66335201 in words is "sixty-six million, three hundred thirty-five thousand, two hundred one".