136868871 has 16 divisors (see below), whose sum is σ = 187380864. Its totient is φ = 88816224.

The previous prime is 136868869. The next prime is 136868903. The reversal of 136868871 is 178868631.

It is not a de Polignac number, because 136868871 - 2¹ = 136868869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136868871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136868861) 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, 39220 + ... + 42566.

It is an arithmetic number, because the mean of its divisors is an integer number (11711304).

Almost surely, 2^136868871 is an apocalyptic number.

136868871 is a deficient number, since it is larger than the sum of its proper divisors (50511993).

136868871 is a wasteful number, since it uses less digits than its factorization.

136868871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710.

The product of its digits is 387072, while the sum is 48.

The square root of 136868871 is about 11699.0970164368. The cubic root of 136868871 is about 515.3491470968.

The spelling of 136868871 in words is "one hundred thirty-six million, eight hundred sixty-eight thousand, eight hundred seventy-one".