698066688 has 144 divisors (see below), whose sum is σ = 2133936000. Its totient is φ = 200355840.

The previous prime is 698066647. The next prime is 698066713. The reversal of 698066688 is 886660896.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 15 ways as a sum of consecutive naturals, for example, 158338 + ... + 162686.

It is an arithmetic number, because the mean of its divisors is an integer number (14819000).

Almost surely, 2^698066688 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 698066688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066968000).

698066688 is an abundant number, since it is smaller than the sum of its proper divisors (1435869312).

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

698066688 is a wasteful number, since it uses less digits than its factorization.

698066688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398 (or 4384 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The square root of 698066688 is about 26420.9516861146. The cubic root of 698066688 is about 887.0858216326.

The spelling of 698066688 in words is "six hundred ninety-eight million, sixty-six thousand, six hundred eighty-eight".