136871405 has 16 divisors (see below), whose sum is σ = 179419968. Its totient is φ = 99408000.

The previous prime is 136871401. The next prime is 136871431. The reversal of 136871405 is 504178631.

It is not a de Polignac number, because 136871405 - 2² = 136871401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136871401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58865 + ... + 61145.

It is an arithmetic number, because the mean of its divisors is an integer number (11213748).

Almost surely, 2^136871405 is an apocalyptic number.

It is an amenable number.

136871405 is a deficient number, since it is larger than the sum of its proper divisors (42548563).

136871405 is a wasteful number, since it uses less digits than its factorization.

136871405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 136871405 is about 11699.2053148921. The cubic root of 136871405 is about 515.3523274807.

The spelling of 136871405 in words is "one hundred thirty-six million, eight hundred seventy-one thousand, four hundred five".