812066473 has 2 divisors, whose sum is σ = 812066474. Its totient is φ = 812066472.

The previous prime is 812066471. The next prime is 812066531. The reversal of 812066473 is 374660218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613453824 + 198612649 = 24768^2 + 14093^2 .

It is a cyclic number.

It is not a de Polignac number, because 812066473 - 2¹ = 812066471 is a prime.

Together with 812066471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (812066471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406033236 + 406033237.

It is an arithmetic number, because the mean of its divisors is an integer number (406033237).

Almost surely, 2^812066473 is an apocalyptic number.

It is an amenable number.

812066473 is a deficient number, since it is larger than the sum of its proper divisors (1).

812066473 is an equidigital number, since it uses as much as digits as its factorization.

812066473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 812066473 is about 28496.7800461736. The cubic root of 812066473 is about 932.9617961532.

The spelling of 812066473 in words is "eight hundred twelve million, sixty-six thousand, four hundred seventy-three".