66340201 has 2 divisors, whose sum is σ = 66340202. Its totient is φ = 66340200.

The previous prime is 66340177. The next prime is 66340207. The reversal of 66340201 is 10204366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62726400 + 3613801 = 7920^2 + 1901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66340201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66340207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33170100 + 33170101.

It is an arithmetic number, because the mean of its divisors is an integer number (33170101).

Almost surely, 2^66340201 is an apocalyptic number.

It is an amenable number.

66340201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66340201 is an equidigital number, since it uses as much as digits as its factorization.

66340201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 66340201 is about 8144.9494166631. The cubic root of 66340201 is about 404.8171729794.

Adding to 66340201 its reverse (10204366), we get a palindrome (76544567).

The spelling of 66340201 in words is "sixty-six million, three hundred forty thousand, two hundred one".