136268666 has 8 divisors (see below), whose sum is σ = 209388564. Its totient is φ = 66472480.

The previous prime is 136268663. The next prime is 136268681. The reversal of 136268666 is 666862631.

It can be written as a sum of positive squares in 2 ways, for example, as 135047641 + 1221025 = 11621^2 + 1105^2 .

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

It is not an unprimeable number, because it can be changed into a prime (136268663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830825 + ... + 830988.

Almost surely, 2^136268666 is an apocalyptic number.

136268666 is a deficient number, since it is larger than the sum of its proper divisors (73119898).

136268666 is a wasteful number, since it uses less digits than its factorization.

136268666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661856.

The product of its digits is 373248, while the sum is 44.

The square root of 136268666 is about 11673.4170661379. The cubic root of 136268666 is about 514.5947306510.

The spelling of 136268666 in words is "one hundred thirty-six million, two hundred sixty-eight thousand, six hundred sixty-six".