136502087 has 4 divisors (see below), whose sum is σ = 136657560. Its totient is φ = 136346616.

The previous prime is 136502071. The next prime is 136502111. The reversal of 136502087 is 780205631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780205631 = 43 ⋅18144317.

It is a cyclic number.

It is not a de Polignac number, because 136502087 - 2⁴ = 136502071 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 (136502887) 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 3 ways as a sum of consecutive naturals, for example, 76412 + ... + 78177.

It is an arithmetic number, because the mean of its divisors is an integer number (34164390).

Almost surely, 2^136502087 is an apocalyptic number.

136502087 is a deficient number, since it is larger than the sum of its proper divisors (155473).

136502087 is an equidigital number, since it uses as much as digits as its factorization.

136502087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155472.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 136502087 is about 11683.4107605613. The cubic root of 136502087 is about 514.8883875386. Note that the first 3 decimals are identical.

The spelling of 136502087 in words is "one hundred thirty-six million, five hundred two thousand, eighty-seven".