869688 has 48 divisors (see below), whose sum is σ = 2414880. Its totient is φ = 282624.

The previous prime is 869683. The next prime is 869689. The reversal of 869688 is 886968.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869683) by changing a digit.

869688 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3256 + ... + 3512.

It is an arithmetic number, because the mean of its divisors is an integer number (50310).

2⁸⁶⁹⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207440).

869688 is an abundant number, since it is smaller than the sum of its proper divisors (1545192).

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

869688 is a wasteful number, since it uses less digits than its factorization.

869688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 309 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 869688 is about 932.5706407560. The cubic root of 869688 is about 95.4526139374.

It can be divided in two parts, 8 and 69688, that added together give a palindrome (69696).

The spelling of 869688 in words is "eight hundred sixty-nine thousand, six hundred eighty-eight".