136805408 has 24 divisors (see below), whose sum is σ = 269604972. Its totient is φ = 68334336.

The previous prime is 136805401. The next prime is 136805413. The reversal of 136805408 is 804508631.

It can be written as a sum of positive squares in 2 ways, for example, as 107081104 + 29724304 = 10348^2 + 5452^2 .

It is not an unprimeable number, because it can be changed into a prime (136805401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49766 + ... + 52442.

Almost surely, 2^136805408 is an apocalyptic number.

It is an amenable number.

136805408 is a deficient number, since it is larger than the sum of its proper divisors (132799564).

136805408 is a wasteful number, since it uses less digits than its factorization.

136805408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 136805408 is about 11696.3843986080. The cubic root of 136805408 is about 515.2694828680.

The spelling of 136805408 in words is "one hundred thirty-six million, eight hundred five thousand, four hundred eight".