812068447 has 2 divisors, whose sum is σ = 812068448. Its totient is φ = 812068446.

The previous prime is 812068409. The next prime is 812068457. The reversal of 812068447 is 744860218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812068447 - 2⁷ = 812068319 is a prime.

It is a super-2 number, since 2×812068447² = 1318910325225983618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812068457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406034223 + 406034224.

It is an arithmetic number, because the mean of its divisors is an integer number (406034224).

Almost surely, 2^812068447 is an apocalyptic number.

812068447 is a deficient number, since it is larger than the sum of its proper divisors (1).

812068447 is an equidigital number, since it uses as much as digits as its factorization.

812068447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 812068447 is about 28496.8146816447. The cubic root of 812068447 is about 932.9625521115.

It can be divided in two parts, 8120 and 68447, that added together give a palindrome (76567).

The spelling of 812068447 in words is "eight hundred twelve million, sixty-eight thousand, four hundred forty-seven".