136000861 has 2 divisors, whose sum is σ = 136000862. Its totient is φ = 136000860.

The previous prime is 136000819. The next prime is 136000889. The reversal of 136000861 is 168000631.

136000861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123076836 + 12924025 = 11094^2 + 3595^2 .

It is an emirp because it is prime and its reverse (168000631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136000861 - 2¹³ = 135992669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136000801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68000430 + 68000431.

It is an arithmetic number, because the mean of its divisors is an integer number (68000431).

Almost surely, 2^136000861 is an apocalyptic number.

It is an amenable number.

136000861 is a deficient number, since it is larger than the sum of its proper divisors (1).

136000861 is an equidigital number, since it uses as much as digits as its factorization.

136000861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 136000861 is about 11661.9407047026. The cubic root of 136000861 is about 514.2574033614.

The spelling of 136000861 in words is "one hundred thirty-six million, eight hundred sixty-one", and thus it is an aban number.