698109 has 8 divisors (see below), whose sum is σ = 940800. Its totient is φ = 460416.

The previous prime is 698083. The next prime is 698111. The reversal of 698109 is 901896.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 698109 - 2⁵ = 698077 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 698109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691109) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 909 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (117600).

2⁶⁹⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

698109 is a deficient number, since it is larger than the sum of its proper divisors (242691).

698109 is a wasteful number, since it uses less digits than its factorization.

698109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 698109 is about 835.5291736379. The cubic root of 698109 is about 88.7103744284.

The spelling of 698109 in words is "six hundred ninety-eight thousand, one hundred nine".