812277 has 12 divisors (see below), whose sum is σ = 1242540. Its totient is φ = 509568.

The previous prime is 812267. The next prime is 812281. The reversal of 812277 is 772218.

It can be written as a sum of positive squares in 2 ways, for example, as 236196 + 576081 = 486^2 + 759^2 .

It is not a de Polignac number, because 812277 - 2⁶ = 812213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 812277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2502 + ... + 2807.

It is an arithmetic number, because the mean of its divisors is an integer number (103545).

2⁸¹²²⁷⁷ is an apocalyptic number.

It is an amenable number.

812277 is a deficient number, since it is larger than the sum of its proper divisors (430263).

812277 is a wasteful number, since it uses less digits than its factorization.

812277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332 (or 5329 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 812277 is about 901.2641122335. The cubic root of 812277 is about 93.3042412163.

It can be divided in two parts, 812 and 277, that added together give a square (1089 = 33²).

The spelling of 812277 in words is "eight hundred twelve thousand, two hundred seventy-seven".