804775217 has 2 divisors, whose sum is σ = 804775218. Its totient is φ = 804775216.

The previous prime is 804775207. The next prime is 804775241. The reversal of 804775217 is 712577408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595799281 + 208975936 = 24409^2 + 14456^2 .

It is a cyclic number.

It is not a de Polignac number, because 804775217 - 2⁸ = 804774961 is a prime.

It is not a weakly prime, because it can be changed into another prime (804775207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402387608 + 402387609.

It is an arithmetic number, because the mean of its divisors is an integer number (402387609).

Almost surely, 2^804775217 is an apocalyptic number.

It is an amenable number.

804775217 is a deficient number, since it is larger than the sum of its proper divisors (1).

804775217 is an equidigital number, since it uses as much as digits as its factorization.

804775217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 804775217 is about 28368.5603617808. The cubic root of 804775217 is about 930.1611533273.

The spelling of 804775217 in words is "eight hundred four million, seven hundred seventy-five thousand, two hundred seventeen".