64269209 has 2 divisors, whose sum is σ = 64269210. Its totient is φ = 64269208.

The previous prime is 64269187. The next prime is 64269217. The reversal of 64269209 is 90296246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46963609 + 17305600 = 6853^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 64269209 - 2¹⁶ = 64203673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64263209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32134604 + 32134605.

It is an arithmetic number, because the mean of its divisors is an integer number (32134605).

Almost surely, 2^64269209 is an apocalyptic number.

It is an amenable number.

64269209 is a deficient number, since it is larger than the sum of its proper divisors (1).

64269209 is an equidigital number, since it uses as much as digits as its factorization.

64269209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 64269209 is about 8016.8079058937. The cubic root of 64269209 is about 400.5600675282.

The spelling of 64269209 in words is "sixty-four million, two hundred sixty-nine thousand, two hundred nine".