698868559819 has 4 divisors (see below), whose sum is σ = 699135611944. Its totient is φ = 698601507696.

The previous prime is 698868559817. The next prime is 698868559849. The reversal of 698868559819 is 918955868896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 698868559819 - 2¹ = 698868559817 is a prime.

It is a super-2 number, since 2×698868559819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698868559813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133522137 + ... + 133527370.

It is an arithmetic number, because the mean of its divisors is an integer number (174783902986).

Almost surely, 2^698868559819 is an apocalyptic number.

698868559819 is a deficient number, since it is larger than the sum of its proper divisors (267052125).

698868559819 is a wasteful number, since it uses less digits than its factorization.

698868559819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267052124.

The product of its digits is 2687385600, while the sum is 82.

The spelling of 698868559819 in words is "six hundred ninety-eight billion, eight hundred sixty-eight million, five hundred fifty-nine thousand, eight hundred nineteen".