811206 has 48 divisors (see below), whose sum is σ = 2038608. Its totient is φ = 230400.

The previous prime is 811199. The next prime is 811207. The reversal of 811206 is 602118.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811207) by changing a digit.

811206 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 23 ways as a sum of consecutive naturals, for example, 3246 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (42471).

2⁸¹¹²⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019304).

811206 is an abundant number, since it is smaller than the sum of its proper divisors (1227402).

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

811206 is a wasteful number, since it uses less digits than its factorization.

811206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 811206 is about 900.6697507966. The cubic root of 811206 is about 93.2632154768.

The spelling of 811206 in words is "eight hundred eleven thousand, two hundred six".