136833691 has 4 divisors (see below), whose sum is σ = 137084392. Its totient is φ = 136582992.

The previous prime is 136833679. The next prime is 136833701. The reversal of 136833691 is 196338631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196338631 = 3511 ⋅55921.

It is a cyclic number.

It is not a de Polignac number, because 136833691 - 2¹⁹ = 136309403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136833661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124530 + ... + 125623.

It is an arithmetic number, because the mean of its divisors is an integer number (34271098).

Almost surely, 2^136833691 is an apocalyptic number.

136833691 is a deficient number, since it is larger than the sum of its proper divisors (250701).

136833691 is an equidigital number, since it uses as much as digits as its factorization.

136833691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250700.

The product of its digits is 69984, while the sum is 40.

The square root of 136833691 is about 11697.5933849660. The cubic root of 136833691 is about 515.3049891705.

The spelling of 136833691 in words is "one hundred thirty-six million, eight hundred thirty-three thousand, six hundred ninety-one".