136846861 has 2 divisors, whose sum is σ = 136846862. Its totient is φ = 136846860.

The previous prime is 136846817. The next prime is 136846867. The reversal of 136846861 is 168648631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110775625 + 26071236 = 10525^2 + 5106^2 .

It is an emirp because it is prime and its reverse (168648631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136846861 - 2⁹ = 136846349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136846867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68423430 + 68423431.

It is an arithmetic number, because the mean of its divisors is an integer number (68423431).

Almost surely, 2^136846861 is an apocalyptic number.

It is an amenable number.

136846861 is a deficient number, since it is larger than the sum of its proper divisors (1).

136846861 is an equidigital number, since it uses as much as digits as its factorization.

136846861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 136846861 is about 11698.1563077264. The cubic root of 136846861 is about 515.3215210371.

The spelling of 136846861 in words is "one hundred thirty-six million, eight hundred forty-six thousand, eight hundred sixty-one".