136776197 has 2 divisors, whose sum is σ = 136776198. Its totient is φ = 136776196.

The previous prime is 136776187. The next prime is 136776221. The reversal of 136776197 is 791677631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88529281 + 48246916 = 9409^2 + 6946^2 .

It is an emirp because it is prime and its reverse (791677631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136776197 - 2⁸ = 136775941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136776127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68388098 + 68388099.

It is an arithmetic number, because the mean of its divisors is an integer number (68388099).

Almost surely, 2^136776197 is an apocalyptic number.

It is an amenable number.

136776197 is a deficient number, since it is larger than the sum of its proper divisors (1).

136776197 is an equidigital number, since it uses as much as digits as its factorization.

136776197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 47.

The square root of 136776197 is about 11695.1356127238. The cubic root of 136776197 is about 515.2328064225.

The spelling of 136776197 in words is "one hundred thirty-six million, seven hundred seventy-six thousand, one hundred ninety-seven".