812266 has 16 divisors (see below), whose sum is σ = 1499904. Its totient is φ = 321264.

The previous prime is 812257. The next prime is 812267. The reversal of 812266 is 662218.

812266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 812266.

It is not an unprimeable number, because it can be changed into a prime (812267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050 + ... + 2413.

It is an arithmetic number, because the mean of its divisors is an integer number (93744).

2⁸¹²²⁶⁶ is an apocalyptic number.

812266 is a deficient number, since it is larger than the sum of its proper divisors (687638).

812266 is a wasteful number, since it uses less digits than its factorization.

812266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485.

The product of its digits is 1152, while the sum is 25.

The square root of 812266 is about 901.2580096731. The cubic root of 812266 is about 93.3038200335.

The spelling of 812266 in words is "eight hundred twelve thousand, two hundred sixty-six".