698989269697 has 2 divisors, whose sum is σ = 698989269698. Its totient is φ = 698989269696.

The previous prime is 698989269631. The next prime is 698989269731. The reversal of 698989269697 is 796962989896.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620643020481 + 78346249216 = 787809^2 + 279904^2 .

It is a cyclic number.

It is not a de Polignac number, because 698989269697 - 2¹⁹ = 698988745409 is a prime.

It is not a weakly prime, because it can be changed into another prime (698989269397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349494634848 + 349494634849.

It is an arithmetic number, because the mean of its divisors is an integer number (349494634849).

Almost surely, 2^698989269697 is an apocalyptic number.

It is an amenable number.

698989269697 is a deficient number, since it is larger than the sum of its proper divisors (1).

698989269697 is an equidigital number, since it uses as much as digits as its factorization.

698989269697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11428107264, while the sum is 88.

The spelling of 698989269697 in words is "six hundred ninety-eight billion, nine hundred eighty-nine million, two hundred sixty-nine thousand, six hundred ninety-seven".