136666067 has 8 divisors (see below), whose sum is σ = 141538800. Its totient is φ = 131804064.

The previous prime is 136666037. The next prime is 136666087. The reversal of 136666067 is 760666631.

It is a happy number.

136666067 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.

It is a cyclic number.

It is not a de Polignac number, because 136666067 - 2⁸ = 136665811 is a prime.

It is a super-2 number, since 2×136666067² = 37355227738496978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136666027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30284 + ... + 34502.

It is an arithmetic number, because the mean of its divisors is an integer number (17692350).

Almost surely, 2^136666067 is an apocalyptic number.

136666067 is a deficient number, since it is larger than the sum of its proper divisors (4872733).

136666067 is a wasteful number, since it uses less digits than its factorization.

136666067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5365.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 136666067 is about 11690.4262967610. The cubic root of 136666067 is about 515.0944835601.

The spelling of 136666067 in words is "one hundred thirty-six million, six hundred sixty-six thousand, sixty-seven".