698409168 has 80 divisors (see below), whose sum is σ = 1943494656. Its totient is φ = 215487360.

The previous prime is 698409161. The next prime is 698409169. The reversal of 698409168 is 861904896.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 698409168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698409161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24021 + ... + 44427.

Almost surely, 2^698409168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698409168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971747328).

698409168 is an abundant number, since it is smaller than the sum of its proper divisors (1245085488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698409168 is a wasteful number, since it uses less digits than its factorization.

698409168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472 (or 20466 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 698409168 is about 26427.4321113498. The cubic root of 698409168 is about 887.2308696091.

The spelling of 698409168 in words is "six hundred ninety-eight million, four hundred nine thousand, one hundred sixty-eight".