805117307 has 4 divisors (see below), whose sum is σ = 805343760. Its totient is φ = 804890856.

The previous prime is 805117301. The next prime is 805117309. The reversal of 805117307 is 703711508.

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 805117307 - 2²⁸ = 536681851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805117301) 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, 107807 + ... + 115032.

It is an arithmetic number, because the mean of its divisors is an integer number (201335940).

Almost surely, 2^805117307 is an apocalyptic number.

805117307 is a deficient number, since it is larger than the sum of its proper divisors (226453).

805117307 is a wasteful number, since it uses less digits than its factorization.

805117307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226452.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 805117307 is about 28374.5891071571. The cubic root of 805117307 is about 930.2929308087.

The spelling of 805117307 in words is "eight hundred five million, one hundred seventeen thousand, three hundred seven".