84770084617 has 2 divisors, whose sum is σ = 84770084618. Its totient is φ = 84770084616.

The previous prime is 84770084611. The next prime is 84770084731. The reversal of 84770084617 is 71648007748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64876674681 + 19893409936 = 254709^2 + 141044^2 .

It is a cyclic number.

It is not a de Polignac number, because 84770084617 - 2²³ = 84761696009 is a prime.

It is not a weakly prime, because it can be changed into another prime (84770084611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42385042308 + 42385042309.

It is an arithmetic number, because the mean of its divisors is an integer number (42385042309).

Almost surely, 2^84770084617 is an apocalyptic number.

It is an amenable number.

84770084617 is a deficient number, since it is larger than the sum of its proper divisors (1).

84770084617 is an equidigital number, since it uses as much as digits as its factorization.

84770084617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 84770084617 in words is "eighty-four billion, seven hundred seventy million, eighty-four thousand, six hundred seventeen".