831680 has 56 divisors (see below), whose sum is σ = 2084832. Its totient is φ = 315392.

The previous prime is 831679. The next prime is 831683. The reversal of 831680 is 86138.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (831683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7304 + ... + 7416.

2⁸³¹⁶⁸⁰ is an apocalyptic number.

831680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 831680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042416).

831680 is an abundant number, since it is smaller than the sum of its proper divisors (1253152).

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

831680 is a wasteful number, since it uses less digits than its factorization.

831680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 831680 is about 911.9649116057. The cubic root of 831680 is about 94.0413278360.

The spelling of 831680 in words is "eight hundred thirty-one thousand, six hundred eighty".