805268017 has 2 divisors, whose sum is σ = 805268018. Its totient is φ = 805268016.

The previous prime is 805267999. The next prime is 805268029. The reversal of 805268017 is 710862508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804800161 + 467856 = 28369^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 805268017 - 2²³ = 796879409 is a prime.

It is a super-2 number, since 2×805268017² = 1296913158406224578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (805268077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402634008 + 402634009.

It is an arithmetic number, because the mean of its divisors is an integer number (402634009).

Almost surely, 2^805268017 is an apocalyptic number.

It is an amenable number.

805268017 is a deficient number, since it is larger than the sum of its proper divisors (1).

805268017 is an equidigital number, since it uses as much as digits as its factorization.

805268017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 805268017 is about 28377.2447041639. The cubic root of 805268017 is about 930.3509744002.

The spelling of 805268017 in words is "eight hundred five million, two hundred sixty-eight thousand, seventeen".