806880017 has 2 divisors, whose sum is σ = 806880018. Its totient is φ = 806880016.

The previous prime is 806879999. The next prime is 806880029. The reversal of 806880017 is 710088608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465221761 + 341658256 = 21569^2 + 18484^2 .

It is a cyclic number.

It is not a de Polignac number, because 806880017 - 2¹² = 806875921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (806880077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403440008 + 403440009.

It is an arithmetic number, because the mean of its divisors is an integer number (403440009).

Almost surely, 2^806880017 is an apocalyptic number.

It is an amenable number.

806880017 is a deficient number, since it is larger than the sum of its proper divisors (1).

806880017 is an equidigital number, since it uses as much as digits as its factorization.

806880017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 806880017 is about 28405.6335433660. The cubic root of 806880017 is about 930.9713583901.

The spelling of 806880017 in words is "eight hundred six million, eight hundred eighty thousand, seventeen".