133335689 has 2 divisors, whose sum is σ = 133335690. Its totient is φ = 133335688.

The previous prime is 133335677. The next prime is 133335721. The reversal of 133335689 is 986533331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127125625 + 6210064 = 11275^2 + 2492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133335689 is a prime.

It is a super-2 number, since 2×133335689² = 35556811922209442, which contains 22 as substring.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (133335659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66667844 + 66667845.

It is an arithmetic number, because the mean of its divisors is an integer number (66667845).

Almost surely, 2^133335689 is an apocalyptic number.

It is an amenable number.

133335689 is a deficient number, since it is larger than the sum of its proper divisors (1).

133335689 is an equidigital number, since it uses as much as digits as its factorization.

133335689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 133335689 is about 11547.1073867008. The cubic root of 133335689 is about 510.8759635273.

The spelling of 133335689 in words is "one hundred thirty-three million, three hundred thirty-five thousand, six hundred eighty-nine".