812663017 has 2 divisors, whose sum is σ = 812663018. Its totient is φ = 812663016.

The previous prime is 812663011. The next prime is 812663081. The reversal of 812663017 is 710366218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 578450601 + 234212416 = 24051^2 + 15304^2 .

It is a cyclic number.

It is not a de Polignac number, because 812663017 - 2¹¹ = 812660969 is a prime.

It is not a weakly prime, because it can be changed into another prime (812663011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406331508 + 406331509.

It is an arithmetic number, because the mean of its divisors is an integer number (406331509).

Almost surely, 2^812663017 is an apocalyptic number.

It is an amenable number.

812663017 is a deficient number, since it is larger than the sum of its proper divisors (1).

812663017 is an equidigital number, since it uses as much as digits as its factorization.

812663017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 812663017 is about 28507.2449914053. The cubic root of 812663017 is about 933.1901914692.

The spelling of 812663017 in words is "eight hundred twelve million, six hundred sixty-three thousand, seventeen".