135206859 has 8 divisors (see below), whose sum is σ = 180332032. Its totient is φ = 90109800.

The previous prime is 135206849. The next prime is 135206861. The reversal of 135206859 is 958602531.

135206859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 135206859 - 2²⁴ = 118429643 is a prime.

It is a super-3 number, since 3×135206859³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135206849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10302 + ... + 19404.

It is an arithmetic number, because the mean of its divisors is an integer number (22541504).

Almost surely, 2^135206859 is an apocalyptic number.

135206859 is a deficient number, since it is larger than the sum of its proper divisors (45125173).

135206859 is an equidigital number, since it uses as much as digits as its factorization.

135206859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14057.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 135206859 is about 11627.8484252247. The cubic root of 135206859 is about 513.2546680022.

The spelling of 135206859 in words is "one hundred thirty-five million, two hundred six thousand, eight hundred fifty-nine".