811968 has 28 divisors (see below), whose sum is σ = 2148840. Its totient is φ = 270592.

The previous prime is 811961. The next prime is 811981. The reversal of 811968 is 869118.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811961) by changing a digit.

811968 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, 1923 + ... + 2306.

2⁸¹¹⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

811968 is an abundant number, since it is smaller than the sum of its proper divisors (1336872).

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

811968 is a wasteful number, since it uses less digits than its factorization.

811968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 4234 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 811968 is about 901.0926700401. The cubic root of 811968 is about 93.2924083616.

The spelling of 811968 in words is "eight hundred eleven thousand, nine hundred sixty-eight".