135686082 has 64 divisors (see below), whose sum is σ = 317979648. Its totient is φ = 37800000.

The previous prime is 135686081. The next prime is 135686093. The reversal of 135686082 is 280686531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 135686082.

It is not an unprimeable number, because it can be changed into a prime (135686081) 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, 540457 + ... + 540707.

It is an arithmetic number, because the mean of its divisors is an integer number (4968432).

Almost surely, 2^135686082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135686082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158989824).

135686082 is an abundant number, since it is smaller than the sum of its proper divisors (182293566).

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

135686082 is a wasteful number, since it uses less digits than its factorization.

135686082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 135686082 is about 11648.4368908451. The cubic root of 135686082 is about 513.8603409673.

The spelling of 135686082 in words is "one hundred thirty-five million, six hundred eighty-six thousand, eighty-two".