698409396 has 36 divisors (see below), whose sum is σ = 1789614372. Its totient is φ = 229613184.

The previous prime is 698409379. The next prime is 698409497. The reversal of 698409396 is 693904896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 348195600 + 350213796 = 18660^2 + 18714^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 130251 + ... + 135506.

Almost surely, 2^698409396 is an apocalyptic number.

It is an amenable number.

698409396 is an abundant number, since it is smaller than the sum of its proper divisors (1091204976).

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

698409396 is a wasteful number, since it uses less digits than its factorization.

698409396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265840 (or 265835 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 698409396 is about 26427.4364250489. The cubic root of 698409396 is about 887.2309661564.

The spelling of 698409396 in words is "six hundred ninety-eight million, four hundred nine thousand, three hundred ninety-six".