811683 has 6 divisors (see below), whose sum is σ = 1172444. Its totient is φ = 541116.

The previous prime is 811667. The next prime is 811691. The reversal of 811683 is 386118.

It is not a de Polignac number, because 811683 - 2⁴ = 811667 is a prime.

It is a Duffinian number.

811683 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (811183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45085 + ... + 45102.

2⁸¹¹⁶⁸³ is an apocalyptic number.

811683 is a deficient number, since it is larger than the sum of its proper divisors (360761).

811683 is a wasteful number, since it uses less digits than its factorization.

811683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90193 (or 90190 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 811683 is about 900.9345148234. The cubic root of 811683 is about 93.2814919019.

It can be divided in two parts, 81 and 1683, that added together give a square (1764 = 42²).

The spelling of 811683 in words is "eight hundred eleven thousand, six hundred eighty-three".