698443648 has 96 divisors (see below), whose sum is σ = 1704083400. Its totient is φ = 283530240.

The previous prime is 698443597. The next prime is 698443649. The reversal of 698443648 is 846344896.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 698443595 and 698443604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698443649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116238 + ... + 122098.

Almost surely, 2^698443648 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 698443648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852041700).

698443648 is an abundant number, since it is smaller than the sum of its proper divisors (1005639752).

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

698443648 is a wasteful number, since it uses less digits than its factorization.

698443648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908 (or 5889 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 52.

The square root of 698443648 is about 26428.0844557452. The cubic root of 698443648 is about 887.2454700364.

The spelling of 698443648 in words is "six hundred ninety-eight million, four hundred forty-three thousand, six hundred forty-eight".