136666804 has 24 divisors (see below), whose sum is σ = 245407680. Its totient is φ = 66573504.

The previous prime is 136666793. The next prime is 136666813. The reversal of 136666804 is 408666631.

It is a congruent 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, 21417 + ... + 27055.

It is an arithmetic number, because the mean of its divisors is an integer number (10225320).

Almost surely, 2^136666804 is an apocalyptic number.

It is an amenable number.

136666804 is a deficient number, since it is larger than the sum of its proper divisors (108740876).

136666804 is a wasteful number, since it uses less digits than its factorization.

136666804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5799 (or 5797 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 136666804 is about 11690.4578182379. The cubic root of 136666804 is about 515.0954094763.

The spelling of 136666804 in words is "one hundred thirty-six million, six hundred sixty-six thousand, eight hundred four".