136868201 has 4 divisors (see below), whose sum is σ = 139112004. Its totient is φ = 134624400.

The previous prime is 136868189. The next prime is 136868219. The reversal of 136868201 is 102868631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4618201 + 132250000 = 2149^2 + 11500^2 .

It is a cyclic number.

It is not a de Polignac number, because 136868201 - 2¹⁰ = 136867177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136868401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121810 + ... + 1121931.

It is an arithmetic number, because the mean of its divisors is an integer number (34778001).

Almost surely, 2^136868201 is an apocalyptic number.

It is an amenable number.

136868201 is a deficient number, since it is larger than the sum of its proper divisors (2243803).

136868201 is an equidigital number, since it uses as much as digits as its factorization.

136868201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243802.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 136868201 is about 11699.0683817131. The cubic root of 136868201 is about 515.3483061836.

The spelling of 136868201 in words is "one hundred thirty-six million, eight hundred sixty-eight thousand, two hundred one".