66229201 has 2 divisors, whose sum is σ = 66229202. Its totient is φ = 66229200.

The previous prime is 66229169. The next prime is 66229253. The reversal of 66229201 is 10292266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 17438976 = 6985^2 + 4176^2 .

It is a cyclic number.

It is not a de Polignac number, because 66229201 - 2⁵ = 66229169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66229201.

It is not a weakly prime, because it can be changed into another prime (66229271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33114600 + 33114601.

It is an arithmetic number, because the mean of its divisors is an integer number (33114601).

Almost surely, 2^66229201 is an apocalyptic number.

It is an amenable number.

66229201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66229201 is an equidigital number, since it uses as much as digits as its factorization.

66229201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 66229201 is about 8138.1325253402. The cubic root of 66229201 is about 404.5912677700.

It can be divided in two parts, 66229 and 201, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 66229201 in words is "sixty-six million, two hundred twenty-nine thousand, two hundred one".