811612 has 12 divisors (see below), whose sum is σ = 1426936. Its totient is φ = 403920.

The previous prime is 811607. The next prime is 811619. The reversal of 811612 is 216118.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 811612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811619) by changing a digit.

811612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018 + ... + 1630.

2⁸¹¹⁶¹² is an apocalyptic number.

It is an amenable number.

811612 is a deficient number, since it is larger than the sum of its proper divisors (615324).

811612 is a wasteful number, since it uses less digits than its factorization.

811612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 946 counting only the distinct ones).

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

The square root of 811612 is about 900.8951104318. The cubic root of 811612 is about 93.2787719653.

It can be divided in two parts, 8116 and 12, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 811612 in words is "eight hundred eleven thousand, six hundred twelve".