136540645 has 8 divisors (see below), whose sum is σ = 165100320. Its totient is φ = 108398160.

The previous prime is 136540643. The next prime is 136540681. The reversal of 136540645 is 546045631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136540645 - 2¹ = 136540643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136540645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136540643) 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 7 ways as a sum of consecutive naturals, for example, 103575 + ... + 104884.

It is an arithmetic number, because the mean of its divisors is an integer number (20637540).

Almost surely, 2^136540645 is an apocalyptic number.

It is an amenable number.

136540645 is a deficient number, since it is larger than the sum of its proper divisors (28559675).

136540645 is a wasteful number, since it uses less digits than its factorization.

136540645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208595.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 136540645 is about 11685.0607615023. The cubic root of 136540645 is about 514.9368634701.

The spelling of 136540645 in words is "one hundred thirty-six million, five hundred forty thousand, six hundred forty-five".