89698775717 has 2 divisors, whose sum is σ = 89698775718. Its totient is φ = 89698775716.

The previous prime is 89698775681. The next prime is 89698775723. The reversal of 89698775717 is 71757789698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84192245281 + 5506530436 = 290159^2 + 74206^2 .

It is a cyclic number.

It is not a de Polignac number, because 89698775717 - 2¹² = 89698771621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89698775737) 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, 44849387858 + 44849387859.

It is an arithmetic number, because the mean of its divisors is an integer number (44849387859).

Almost surely, 2^89698775717 is an apocalyptic number.

It is an amenable number.

89698775717 is a deficient number, since it is larger than the sum of its proper divisors (1).

89698775717 is an equidigital number, since it uses as much as digits as its factorization.

89698775717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373403520, while the sum is 74.

The spelling of 89698775717 in words is "eighty-nine billion, six hundred ninety-eight million, seven hundred seventy-five thousand, seven hundred seventeen".