811066847 has 4 divisors (see below), whose sum is σ = 811140576. Its totient is φ = 810993120.

The previous prime is 811066829. The next prime is 811066849. The reversal of 811066847 is 748660118.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 811066847 - 2¹⁴ = 811050463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811066849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16679 + ... + 43592.

It is an arithmetic number, because the mean of its divisors is an integer number (202785144).

Almost surely, 2^811066847 is an apocalyptic number.

811066847 is a deficient number, since it is larger than the sum of its proper divisors (73729).

811066847 is a wasteful number, since it uses less digits than its factorization.

811066847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73728.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 811066847 is about 28479.2353654377. The cubic root of 811066847 is about 932.5788243018.

The spelling of 811066847 in words is "eight hundred eleven million, sixty-six thousand, eight hundred forty-seven".