698728 has 16 divisors (see below), whose sum is σ = 1320480. Its totient is φ = 346608.

The previous prime is 698723. The next prime is 698729. The reversal of 698728 is 827896.

It is not an unprimeable number, because it can be changed into a prime (698723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075 + ... + 1597.

It is an arithmetic number, because the mean of its divisors is an integer number (82530).

2⁶⁹⁸⁷²⁸ is an apocalyptic number.

It is an amenable number.

698728 is a deficient number, since it is larger than the sum of its proper divisors (621752).

698728 is a wasteful number, since it uses less digits than its factorization.

698728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 692 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 698728 is about 835.8995154921. The cubic root of 698728 is about 88.7365859512.

The spelling of 698728 in words is "six hundred ninety-eight thousand, seven hundred twenty-eight".