135208069 has 8 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 132073200.

The previous prime is 135208067. The next prime is 135208091. The reversal of 135208069 is 960802531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135208069 - 2¹ = 135208067 is a prime.

It is a super-2 number, since 2×135208069² = 36562443845417522, 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 (135208067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997 + ... + 16474.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^135208069 is an apocalyptic number.

It is an amenable number.

135208069 is a deficient number, since it is larger than the sum of its proper divisors (3170171).

135208069 is a wasteful number, since it uses less digits than its factorization.

135208069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 135208069 is about 11627.9004553703. The cubic root of 135208069 is about 513.2561990791.

The spelling of 135208069 in words is "one hundred thirty-five million, two hundred eight thousand, sixty-nine".