135898 has 16 divisors (see below), whose sum is σ = 247104. Its totient is φ = 54720.

The previous prime is 135893. The next prime is 135899. The reversal of 135898 is 898531.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (135893) by changing a digit.

135898 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (15444).

2¹³⁵⁸⁹⁸ is an apocalyptic number.

135898 is a deficient number, since it is larger than the sum of its proper divisors (111206).

135898 is a wasteful number, since it uses less digits than its factorization.

135898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its digits is 8640, while the sum is 34.

The square root of 135898 is about 368.6434591852. The cubic root of 135898 is about 51.4127721898.

The spelling of 135898 in words is "one hundred thirty-five thousand, eight hundred ninety-eight".