136666 has 8 divisors (see below), whose sum is σ = 213984. Its totient is φ = 65340.

The previous prime is 136657. The next prime is 136691. The reversal of 136666 is 666631.

136666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

136666 is a modest number, since divided by 666 gives 136 as remainder.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (26748).

2¹³⁶⁶⁶⁶ is an apocalyptic number.

136666 is a deficient number, since it is larger than the sum of its proper divisors (77318).

136666 is a wasteful number, since it uses less digits than its factorization.

136666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its digits is 3888, while the sum is 28.

The square root of 136666 is about 369.6836485429. The cubic root of 136666 is about 51.5094399386.

The spelling of 136666 in words is "one hundred thirty-six thousand, six hundred sixty-six".