133206569 has 2 divisors, whose sum is σ = 133206570. Its totient is φ = 133206568.

The previous prime is 133206559. The next prime is 133206589. The reversal of 133206569 is 965602331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 34969 = 11540^2 + 187^2 .

It is an emirp because it is prime and its reverse (965602331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133206569 - 2⁸ = 133206313 is a prime.

It is a super-2 number, since 2×133206569² = 35487980049503522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133206559) 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, 66603284 + 66603285.

It is an arithmetic number, because the mean of its divisors is an integer number (66603285).

Almost surely, 2^133206569 is an apocalyptic number.

It is an amenable number.

133206569 is a deficient number, since it is larger than the sum of its proper divisors (1).

133206569 is an equidigital number, since it uses as much as digits as its factorization.

133206569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 133206569 is about 11541.5150218678. The cubic root of 133206569 is about 510.7110024198.

The spelling of 133206569 in words is "one hundred thirty-three million, two hundred six thousand, five hundred sixty-nine".