136643611 has 32 divisors (see below), whose sum is σ = 161441280. Its totient is φ = 114566400.

The previous prime is 136643561. The next prime is 136643651. The reversal of 136643611 is 116346631.

It is not a de Polignac number, because 136643611 - 2²⁵ = 103089179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136643651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1043016 + ... + 1043146.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^136643611 is an apocalyptic number.

136643611 is a deficient number, since it is larger than the sum of its proper divisors (24797669).

136643611 is a wasteful number, since it uses less digits than its factorization.

136643611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307.

The product of its digits is 7776, while the sum is 31.

The square root of 136643611 is about 11689.4658132868. The cubic root of 136643611 is about 515.0662697892.

The spelling of 136643611 in words is "one hundred thirty-six million, six hundred forty-three thousand, six hundred eleven".