811386 has 12 divisors (see below), whose sum is σ = 1758042. Its totient is φ = 270456.

The previous prime is 811379. The next prime is 811387. The reversal of 811386 is 683118.

811386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 140625 = 819^2 + 375^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (811387) 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, 22521 + ... + 22556.

2⁸¹¹³⁸⁶ is an apocalyptic number.

811386 is an abundant number, since it is smaller than the sum of its proper divisors (946656).

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

811386 is a wasteful number, since it uses less digits than its factorization.

811386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45085 (or 45082 counting only the distinct ones).

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

The square root of 811386 is about 900.7696708926. The cubic root of 811386 is about 93.2701130825.

The spelling of 811386 in words is "eight hundred eleven thousand, three hundred eighty-six".