136985786 has 16 divisors (see below), whose sum is σ = 235068864. Its totient is φ = 58649184.

The previous prime is 136985759. The next prime is 136985791. The reversal of 136985786 is 687589631.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11366 + ... + 20078.

It is an arithmetic number, because the mean of its divisors is an integer number (14691804).

Almost surely, 2^136985786 is an apocalyptic number.

136985786 is a deficient number, since it is larger than the sum of its proper divisors (98083078).

136985786 is a wasteful number, since it uses less digits than its factorization.

136985786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9845.

The product of its digits is 2177280, while the sum is 53.

The square root of 136985786 is about 11704.0927029821. The cubic root of 136985786 is about 515.4958444362.

The spelling of 136985786 in words is "one hundred thirty-six million, nine hundred eighty-five thousand, seven hundred eighty-six".