698715901217 has 2 divisors, whose sum is σ = 698715901218. Its totient is φ = 698715901216.

The previous prime is 698715901211. The next prime is 698715901229. The reversal of 698715901217 is 712109517896.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556514508001 + 142201393216 = 745999^2 + 377096^2 .

It is a cyclic number.

It is not a de Polignac number, because 698715901217 - 2¹⁸ = 698715639073 is a prime.

It is a super-2 number, since 2×698715901217² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (698715901211) 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, 349357950608 + 349357950609.

It is an arithmetic number, because the mean of its divisors is an integer number (349357950609).

Almost surely, 2^698715901217 is an apocalyptic number.

It is an amenable number.

698715901217 is a deficient number, since it is larger than the sum of its proper divisors (1).

698715901217 is an equidigital number, since it uses as much as digits as its factorization.

698715901217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 56.

The spelling of 698715901217 in words is "six hundred ninety-eight billion, seven hundred fifteen million, nine hundred one thousand, two hundred seventeen".