135601650 has 72 divisors (see below), whose sum is σ = 365645124. Its totient is φ = 36028800.

The previous prime is 135601649. The next prime is 135601667. The reversal of 135601650 is 56106531.

It is a happy number.

135601650 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 0 + 1 + 650 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 15896169 + 119705481 = 3987^2 + 10941^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 243172 + ... + 243728.

Almost surely, 2^135601650 is an apocalyptic number.

135601650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135601650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182822562).

135601650 is an abundant number, since it is smaller than the sum of its proper divisors (230043474).

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

135601650 is a wasteful number, since it uses less digits than its factorization.

135601650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 135601650 is about 11644.8121496227. The cubic root of 135601650 is about 513.7537339669.

The spelling of 135601650 in words is "one hundred thirty-five million, six hundred one thousand, six hundred fifty".