135620589 has 16 divisors (see below), whose sum is σ = 197088192. Its totient is φ = 82451328.

The previous prime is 135620561. The next prime is 135620591. The reversal of 135620589 is 985026531.

It is not a de Polignac number, because 135620589 - 2⁹ = 135620077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135620549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17712 + ... + 24185.

It is an arithmetic number, because the mean of its divisors is an integer number (12318012).

Almost surely, 2^135620589 is an apocalyptic number.

It is an amenable number.

135620589 is a deficient number, since it is larger than the sum of its proper divisors (61467603).

135620589 is a wasteful number, since it uses less digits than its factorization.

135620589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41996.

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

The square root of 135620589 is about 11645.6253159717. The cubic root of 135620589 is about 513.7776509055. Note that the first 3 decimals are identical.

It can be divided in two parts, 1356 and 20589, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 135620589 in words is "one hundred thirty-five million, six hundred twenty thousand, five hundred eighty-nine".