698397568 has 64 divisors (see below), whose sum is σ = 1528470000. Its totient is φ = 315228160.

The previous prime is 698397563. The next prime is 698397617. The reversal of 698397568 is 865793896.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698397563) 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 7 ways as a sum of consecutive naturals, for example, 208128 + ... + 211456.

Almost surely, 2^698397568 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 698397568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764235000).

698397568 is an abundant number, since it is smaller than the sum of its proper divisors (830072432).

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

698397568 is a wasteful number, since it uses less digits than its factorization.

698397568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503 (or 3491 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 61.

The square root of 698397568 is about 26427.2126415178. The cubic root of 698397568 is about 887.2259575243.

The spelling of 698397568 in words is "six hundred ninety-eight million, three hundred ninety-seven thousand, five hundred sixty-eight".