136640545 has 8 divisors (see below), whose sum is σ = 164885760. Its totient is φ = 108701040.

The previous prime is 136640527. The next prime is 136640551. The reversal of 136640545 is 545046631.

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

It is not a de Polignac number, because 136640545 - 2⁵ = 136640513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136640545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75441 + ... + 77230.

It is an arithmetic number, because the mean of its divisors is an integer number (20610720).

Almost surely, 2^136640545 is an apocalyptic number.

It is an amenable number.

136640545 is a deficient number, since it is larger than the sum of its proper divisors (28245215).

136640545 is a wasteful number, since it uses less digits than its factorization.

136640545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152855.

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

The square root of 136640545 is about 11689.3346688338. The cubic root of 136640545 is about 515.0624174198.

The spelling of 136640545 in words is "one hundred thirty-six million, six hundred forty thousand, five hundred forty-five".