831966 has 8 divisors (see below), whose sum is σ = 1663944. Its totient is φ = 277320.

The previous prime is 831917. The next prime is 831967. The reversal of 831966 is 669138.

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

831966 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831967) by changing a digit.

831966 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 3 ways as a sum of consecutive naturals, for example, 69325 + ... + 69336.

It is an arithmetic number, because the mean of its divisors is an integer number (207993).

2⁸³¹⁹⁶⁶ is an apocalyptic number.

831966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

831966 is a wasteful number, since it uses less digits than its factorization.

831966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138666.

The product of its digits is 7776, while the sum is 33.

The square root of 831966 is about 912.1217024060. The cubic root of 831966 is about 94.0521063154.

It can be divided in two parts, 8319 and 66, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 831966 in words is "eight hundred thirty-one thousand, nine hundred sixty-six".