805108247 has 4 divisors (see below), whose sum is σ = 817124856. Its totient is φ = 793091640.

The previous prime is 805108231. The next prime is 805108259. The reversal of 805108247 is 742801508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 805108247 - 2⁴ = 805108231 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 (805101247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6008204 + ... + 6008337.

It is an arithmetic number, because the mean of its divisors is an integer number (204281214).

Almost surely, 2^805108247 is an apocalyptic number.

805108247 is a deficient number, since it is larger than the sum of its proper divisors (12016609).

805108247 is a wasteful number, since it uses less digits than its factorization.

805108247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016608.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 805108247 is about 28374.4294568190. The cubic root of 805108247 is about 930.2894412610.

The spelling of 805108247 in words is "eight hundred five million, one hundred eight thousand, two hundred forty-seven".