689115 has 16 divisors (see below), whose sum is σ = 1260288. Its totient is φ = 314976.

The previous prime is 689113. The next prime is 689131. The reversal of 689115 is 511986.

It is a happy number.

It is not a de Polignac number, because 689115 - 2¹ = 689113 is a prime.

689115 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689113) 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 15 ways as a sum of consecutive naturals, for example, 3177 + ... + 3386.

It is an arithmetic number, because the mean of its divisors is an integer number (78768).

2⁶⁸⁹¹¹⁵ is an apocalyptic number.

689115 is a deficient number, since it is larger than the sum of its proper divisors (571173).

689115 is a wasteful number, since it uses less digits than its factorization.

689115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6578.

The product of its digits is 2160, while the sum is 30.

The square root of 689115 is about 830.1295079685. The cubic root of 689115 is about 88.3277635822.

The spelling of 689115 in words is "six hundred eighty-nine thousand, one hundred fifteen".