961686137 has 2 divisors, whose sum is σ = 961686138. Its totient is φ = 961686136.

The previous prime is 961686127. The next prime is 961686151. The reversal of 961686137 is 731686169.

It is a happy number.

961686137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 898260841 + 63425296 = 29971^2 + 7964^2 .

It is a cyclic number.

It is not a de Polignac number, because 961686137 - 2²⁸ = 693250681 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 961686091 and 961686100.

It is not a weakly prime, because it can be changed into another prime (961686127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480843068 + 480843069.

It is an arithmetic number, because the mean of its divisors is an integer number (480843069).

Almost surely, 2^961686137 is an apocalyptic number.

It is an amenable number.

961686137 is a deficient number, since it is larger than the sum of its proper divisors (1).

961686137 is an equidigital number, since it uses as much as digits as its factorization.

961686137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 961686137 is about 31011.0647511497. The cubic root of 961686137 is about 987.0620435132.

The spelling of 961686137 in words is "nine hundred sixty-one million, six hundred eighty-six thousand, one hundred thirty-seven".