617794694653 has 2 divisors, whose sum is σ = 617794694654. Its totient is φ = 617794694652.

The previous prime is 617794694623. The next prime is 617794694659. The reversal of 617794694653 is 356496497716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 486313759044 + 131480935609 = 697362^2 + 362603^2 .

It is a cyclic number.

It is not a de Polignac number, because 617794694653 - 2³⁷ = 480355741181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617794694659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308897347326 + 308897347327.

It is an arithmetic number, because the mean of its divisors is an integer number (308897347327).

Almost surely, 2^617794694653 is an apocalyptic number.

It is an amenable number.

617794694653 is a deficient number, since it is larger than the sum of its proper divisors (1).

617794694653 is an equidigital number, since it uses as much as digits as its factorization.

617794694653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205752960, while the sum is 67.

The spelling of 617794694653 in words is "six hundred seventeen billion, seven hundred ninety-four million, six hundred ninety-four thousand, six hundred fifty-three".