812116 has 12 divisors (see below), whose sum is σ = 1470420. Its totient is φ = 392000.

The previous prime is 812101. The next prime is 812129. The reversal of 812116 is 611218.

It can be written as a sum of positive squares in 2 ways, for example, as 384400 + 427716 = 620^2 + 654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 812093 and 812102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385 + ... + 3616.

It is an arithmetic number, because the mean of its divisors is an integer number (122535).

2⁸¹²¹¹⁶ is an apocalyptic number.

It is an amenable number.

812116 is a deficient number, since it is larger than the sum of its proper divisors (658304).

812116 is a wasteful number, since it uses less digits than its factorization.

812116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034 (or 7032 counting only the distinct ones).

The product of its digits is 96, while the sum is 19.

The square root of 812116 is about 901.1747888174. The cubic root of 812116 is about 93.2980762523.

It can be divided in two parts, 81 and 2116, that multiplied together give a square (171396 = 414²).

The spelling of 812116 in words is "eight hundred twelve thousand, one hundred sixteen".