800645807 has 16 divisors (see below), whose sum is σ = 909121920. Its totient is φ = 698997600.

The previous prime is 800645761. The next prime is 800645809. The reversal of 800645807 is 708546008.

It is a cyclic number.

It is not a de Polignac number, because 800645807 - 2⁶ = 800645743 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 (800645809) 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 15 ways as a sum of consecutive naturals, for example, 168332 + ... + 173022.

It is an arithmetic number, because the mean of its divisors is an integer number (56820120).

Almost surely, 2^800645807 is an apocalyptic number.

800645807 is a deficient number, since it is larger than the sum of its proper divisors (108476113).

800645807 is a wasteful number, since it uses less digits than its factorization.

800645807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 800645807 is about 28295.6853071277. The cubic root of 800645807 is about 928.5674970823.

The spelling of 800645807 in words is "eight hundred million, six hundred forty-five thousand, eight hundred seven".