136651645 has 16 divisors (see below), whose sum is σ = 178319232. Its totient is φ = 99927360.

The previous prime is 136651639. The next prime is 136651657. The reversal of 136651645 is 546156631.

It is not a de Polignac number, because 136651645 - 2³ = 136651637 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3511 + ... + 16900.

It is an arithmetic number, because the mean of its divisors is an integer number (11144952).

Almost surely, 2^136651645 is an apocalyptic number.

It is an amenable number.

136651645 is a deficient number, since it is larger than the sum of its proper divisors (41667587).

136651645 is a wasteful number, since it uses less digits than its factorization.

136651645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20532.

The product of its digits is 64800, while the sum is 37.

The square root of 136651645 is about 11689.8094509705. The cubic root of 136651645 is about 515.0763640807.

It can be divided in two parts, 1366516 and 45, that added together give a square (1366561 = 1169²).

The spelling of 136651645 in words is "one hundred thirty-six million, six hundred fifty-one thousand, six hundred forty-five".