698073728 has 32 divisors (see below), whose sum is σ = 1517123520. Its totient is φ = 317305600.

The previous prime is 698073697. The next prime is 698073757. The reversal of 698073728 is 827370896.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246488 + ... + 249303.

It is an arithmetic number, because the mean of its divisors is an integer number (47410110).

Almost surely, 2^698073728 is an apocalyptic number.

It is an amenable number.

698073728 is an abundant number, since it is smaller than the sum of its proper divisors (819049792).

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

698073728 is a wasteful number, since it uses less digits than its factorization.

698073728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495816 (or 495804 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 698073728 is about 26421.0849133793. The cubic root of 698073728 is about 887.0888037083.

It can be divided in two parts, 6980 and 73728, that added together give a palindrome (80708).

The spelling of 698073728 in words is "six hundred ninety-eight million, seventy-three thousand, seven hundred twenty-eight".