136901689 has 2 divisors, whose sum is σ = 136901690. Its totient is φ = 136901688.

The previous prime is 136901683. The next prime is 136901701. The reversal of 136901689 is 986109631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 68343289 = 8280^2 + 8267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136901689 is a prime.

It is not a weakly prime, because it can be changed into another prime (136901683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68450844 + 68450845.

It is an arithmetic number, because the mean of its divisors is an integer number (68450845).

Almost surely, 2^136901689 is an apocalyptic number.

It is an amenable number.

136901689 is a deficient number, since it is larger than the sum of its proper divisors (1).

136901689 is an equidigital number, since it uses as much as digits as its factorization.

136901689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 136901689 is about 11700.4995192513. The cubic root of 136901689 is about 515.3903334201.

The spelling of 136901689 in words is "one hundred thirty-six million, nine hundred one thousand, six hundred eighty-nine".