810827105 has 16 divisors (see below), whose sum is σ = 1062936000. Its totient is φ = 588864960.

The previous prime is 810827081. The next prime is 810827107. The reversal of 810827105 is 501728018.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-810827105 is a prime.

It is not an unprimeable number, because it can be changed into a prime (810827107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30671 + ... + 50619.

It is an arithmetic number, because the mean of its divisors is an integer number (66433500).

Almost surely, 2^810827105 is an apocalyptic number.

It is an amenable number.

810827105 is a deficient number, since it is larger than the sum of its proper divisors (252108895).

810827105 is a wasteful number, since it uses less digits than its factorization.

810827105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20704.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 810827105 is about 28475.0259876967. The cubic root of 810827105 is about 932.4869287341.

The spelling of 810827105 in words is "eight hundred ten million, eight hundred twenty-seven thousand, one hundred five".