961910617 has 2 divisors, whose sum is σ = 961910618. Its totient is φ = 961910616.

The previous prime is 961910603. The next prime is 961910671. The reversal of 961910617 is 716019169.

Together with next prime (961910671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666620761 + 295289856 = 25819^2 + 17184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961910617 is a prime.

It is equal to p_49007758 and since 961910617 and 49007758 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961910617.

It is not a weakly prime, because it can be changed into another prime (961110617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480955308 + 480955309.

It is an arithmetic number, because the mean of its divisors is an integer number (480955309).

Almost surely, 2^961910617 is an apocalyptic number.

It is an amenable number.

961910617 is a deficient number, since it is larger than the sum of its proper divisors (1).

961910617 is an equidigital number, since it uses as much as digits as its factorization.

961910617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 961910617 is about 31014.6838932787. The cubic root of 961910617 is about 987.1388386480.

The spelling of 961910617 in words is "nine hundred sixty-one million, nine hundred ten thousand, six hundred seventeen".