136847871 has 12 divisors (see below), whose sum is σ = 198706560. Its totient is φ = 90753120.

The previous prime is 136847869. The next prime is 136847903. The reversal of 136847871 is 178748631.

It is not a de Polignac number, because 136847871 - 2¹ = 136847869 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136847071) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 38086 + ... + 41523.

It is an arithmetic number, because the mean of its divisors is an integer number (16558880).

Almost surely, 2^136847871 is an apocalyptic number.

136847871 is a deficient number, since it is larger than the sum of its proper divisors (61858689).

136847871 is a wasteful number, since it uses less digits than its factorization.

136847871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79806 (or 79803 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 136847871 is about 11698.1994768426. The cubic root of 136847871 is about 515.3227888130.

The spelling of 136847871 in words is "one hundred thirty-six million, eight hundred forty-seven thousand, eight hundred seventy-one".