135895998 has 64 divisors (see below), whose sum is σ = 318712320. Its totient is φ = 37828992.

The previous prime is 135895993. The next prime is 135896003. The reversal of 135895998 is 899598531.

It is an interprime number because it is at equal distance from previous prime (135895993) and next prime (135896003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135895993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428536 + ... + 428852.

It is an arithmetic number, because the mean of its divisors is an integer number (4979880).

Almost surely, 2^135895998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135895998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159356160).

135895998 is an abundant number, since it is smaller than the sum of its proper divisors (182816322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135895998 is a wasteful number, since it uses less digits than its factorization.

135895998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561.

The product of its digits is 3499200, while the sum is 57.

The square root of 135895998 is about 11657.4438879199. The cubic root of 135895998 is about 514.1251972376.

The spelling of 135895998 in words is "one hundred thirty-five million, eight hundred ninety-five thousand, nine hundred ninety-eight".