698355668 has 12 divisors (see below), whose sum is σ = 1238864340. Its totient is φ = 344394432.

The previous prime is 698355617. The next prime is 698355701. The reversal of 698355668 is 866553896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123698884 + 574656784 = 11122^2 + 23972^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195523 + ... + 1196106.

It is an arithmetic number, because the mean of its divisors is an integer number (103238695).

Almost surely, 2^698355668 is an apocalyptic number.

It is an amenable number.

698355668 is a deficient number, since it is larger than the sum of its proper divisors (540508672).

698355668 is a wasteful number, since it uses less digits than its factorization.

698355668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391706 (or 2391704 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 56.

The square root of 698355668 is about 26426.4198861669. The cubic root of 698355668 is about 887.2082142824.

The spelling of 698355668 in words is "six hundred ninety-eight million, three hundred fifty-five thousand, six hundred sixty-eight".