8641812 has 12 divisors (see below), whose sum is σ = 20164256. Its totient is φ = 2880600.

The previous prime is 8641807. The next prime is 8641817. The reversal of 8641812 is 2181468.

It is an interprime number because it is at equal distance from previous prime (8641807) and next prime (8641817).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 8641812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8641817) 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 3 ways as a sum of consecutive naturals, for example, 360064 + ... + 360087.

Almost surely, 2^8641812 is an apocalyptic number.

It is an amenable number.

8641812 is an abundant number, since it is smaller than the sum of its proper divisors (11522444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8641812 is a wasteful number, since it uses less digits than its factorization.

8641812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720158 (or 720156 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 8641812 is about 2939.6959026403. The cubic root of 8641812 is about 205.2114573967.

It can be divided in two parts, 8641 and 812, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 8641812 in words is "eight million, six hundred forty-one thousand, eight hundred twelve".