135665136 has 60 divisors (see below), whose sum is σ = 380631888. Its totient is φ = 45107712.

The previous prime is 135665099. The next prime is 135665137. The reversal of 135665136 is 631566531.

135665136 is a `hidden beast` number, since 13 + 566 + 51 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 135665136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135665137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71496 + ... + 73368.

Almost surely, 2^135665136 is an apocalyptic number.

135665136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135665136 is an abundant number, since it is smaller than the sum of its proper divisors (244966752).

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

135665136 is a wasteful number, since it uses less digits than its factorization.

135665136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 2381 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 135665136 is about 11647.5377655537. The cubic root of 135665136 is about 513.8338978901.

The spelling of 135665136 in words is "one hundred thirty-five million, six hundred sixty-five thousand, one hundred thirty-six".