698789 has 12 divisors (see below), whose sum is σ = 876204. Its totient is φ = 552384.

The previous prime is 698779. The next prime is 698821. The reversal of 698789 is 987896.

698789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 550564 = 385^2 + 742^2 .

It is not a de Polignac number, because 698789 - 2⁴ = 698773 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698789.

It is not an unprimeable number, because it can be changed into a prime (698729) 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, 89 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (73017).

2⁶⁹⁸⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

698789 is a deficient number, since it is larger than the sum of its proper divisors (177415).

698789 is a wasteful number, since it uses less digits than its factorization.

698789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1117 counting only the distinct ones).

The product of its digits is 217728, while the sum is 47.

The square root of 698789 is about 835.9360023351. The cubic root of 698789 is about 88.7391681550.

The spelling of 698789 in words is "six hundred ninety-eight thousand, seven hundred eighty-nine".