136668907 has 8 divisors (see below), whose sum is σ = 137660480. Its totient is φ = 135681480.

The previous prime is 136668901. The next prime is 136668913. The reversal of 136668907 is 709866631.

136668907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (136668901) and next prime (136668913).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136668907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136668901) 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, 92944 + ... + 94402.

It is an arithmetic number, because the mean of its divisors is an integer number (17207560).

Almost surely, 2^136668907 is an apocalyptic number.

136668907 is a deficient number, since it is larger than the sum of its proper divisors (991573).

136668907 is a wasteful number, since it uses less digits than its factorization.

136668907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 136668907 is about 11690.5477630434. The cubic root of 136668907 is about 515.0980515226.

The spelling of 136668907 in words is "one hundred thirty-six million, six hundred sixty-eight thousand, nine hundred seven".