136868807 has 4 divisors (see below), whose sum is σ = 136897656. Its totient is φ = 136839960.

The previous prime is 136868779. The next prime is 136868839. The reversal of 136868807 is 708868631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708868631 = 43 ⋅16485317.

It is a cyclic number.

It is not a de Polignac number, because 136868807 - 2¹⁴ = 136852423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136868857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5444 + ... + 17417.

It is an arithmetic number, because the mean of its divisors is an integer number (34224414).

Almost surely, 2^136868807 is an apocalyptic number.

136868807 is a deficient number, since it is larger than the sum of its proper divisors (28849).

136868807 is an equidigital number, since it uses as much as digits as its factorization.

136868807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28848.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 136868807 is about 11699.0942811826. The cubic root of 136868807 is about 515.3490667709.

The spelling of 136868807 in words is "one hundred thirty-six million, eight hundred sixty-eight thousand, eight hundred seven".