133685269 has 4 divisors (see below), whose sum is σ = 139497696. Its totient is φ = 127872844.

The previous prime is 133685243. The next prime is 133685281. The reversal of 133685269 is 962586331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133685269 - 2⁹ = 133684757 is a prime.

It is a super-2 number, since 2×133685269² = 35743502295204722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133685219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2906179 + ... + 2906224.

It is an arithmetic number, because the mean of its divisors is an integer number (34874424).

Almost surely, 2^133685269 is an apocalyptic number.

It is an amenable number.

133685269 is a deficient number, since it is larger than the sum of its proper divisors (5812427).

133685269 is an equidigital number, since it uses as much as digits as its factorization.

133685269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812426.

The product of its digits is 233280, while the sum is 43.

The square root of 133685269 is about 11562.2346023595. The cubic root of 133685269 is about 511.3220460675.

The spelling of 133685269 in words is "one hundred thirty-three million, six hundred eighty-five thousand, two hundred sixty-nine".