136240691 has 8 divisors (see below), whose sum is σ = 141418368. Its totient is φ = 131112000.

The previous prime is 136240679. The next prime is 136240717. The reversal of 136240691 is 196042631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136240691 - 2⁶ = 136240627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136240631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6530 + ... + 17751.

It is an arithmetic number, because the mean of its divisors is an integer number (17677296).

Almost surely, 2^136240691 is an apocalyptic number.

136240691 is a deficient number, since it is larger than the sum of its proper divisors (5177677).

136240691 is a wasteful number, since it uses less digits than its factorization.

136240691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24493.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 136240691 is about 11672.2187693686. The cubic root of 136240691 is about 514.5595140131.

The spelling of 136240691 in words is "one hundred thirty-six million, two hundred forty thousand, six hundred ninety-one".