136666216 has 16 divisors (see below), whose sum is σ = 256811940. Its totient is φ = 68183040.

The previous prime is 136666199. The next prime is 136666217. The reversal of 136666216 is 612666631.

It can be written as a sum of positive squares in 2 ways, for example, as 132480100 + 4186116 = 11510^2 + 2046^2 .

It is not an unprimeable number, because it can be changed into a prime (136666217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14841 + ... + 22216.

Almost surely, 2^136666216 is an apocalyptic number.

It is an amenable number.

136666216 is a deficient number, since it is larger than the sum of its proper divisors (120145724).

136666216 is a wasteful number, since it uses less digits than its factorization.

136666216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37524 (or 37520 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 136666216 is about 11690.4326694952. The cubic root of 136666216 is about 515.0946707538.

The spelling of 136666216 in words is "one hundred thirty-six million, six hundred sixty-six thousand, two hundred sixteen".