812027 has 4 divisors (see below), whose sum is σ = 823536. Its totient is φ = 800520.

The previous prime is 812011. The next prime is 812033. The reversal of 812027 is 720218.

812027 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 812027 - 2⁴ = 812011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5648 + ... + 5789.

It is an arithmetic number, because the mean of its divisors is an integer number (205884).

2⁸¹²⁰²⁷ is an apocalyptic number.

812027 is a deficient number, since it is larger than the sum of its proper divisors (11509).

812027 is a wasteful number, since it uses less digits than its factorization.

812027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11508.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 812027 is about 901.1254074767. The cubic root of 812027 is about 93.2946679411.

Subtracting from 812027 its reverse (720218), we obtain a square (91809 = 303²).

The spelling of 812027 in words is "eight hundred twelve thousand, twenty-seven".