136505655 has 80 divisors (see below), whose sum is σ = 287600544. Its totient is φ = 61067520.

The previous prime is 136505653. The next prime is 136505657. The reversal of 136505655 is 556505631.

It is an interprime number because it is at equal distance from previous prime (136505653) and next prime (136505657).

It is not a de Polignac number, because 136505655 - 2¹ = 136505653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136505651) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 56737 + ... + 59093.

Almost surely, 2^136505655 is an apocalyptic number.

136505655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

136505655 is an abundant number, since it is smaller than the sum of its proper divisors (151094889).

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

136505655 is a wasteful number, since it uses less digits than its factorization.

136505655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 136505655 is about 11683.5634546999. The cubic root of 136505655 is about 514.8928736868.

The spelling of 136505655 in words is "one hundred thirty-six million, five hundred five thousand, six hundred fifty-five".