816445727 has 2 divisors, whose sum is σ = 816445728. Its totient is φ = 816445726.

The previous prime is 816445711. The next prime is 816445733. The reversal of 816445727 is 727544618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816445727 - 2⁴ = 816445711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816448727) 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, 408222863 + 408222864.

It is an arithmetic number, because the mean of its divisors is an integer number (408222864).

Almost surely, 2^816445727 is an apocalyptic number.

816445727 is a deficient number, since it is larger than the sum of its proper divisors (1).

816445727 is an equidigital number, since it uses as much as digits as its factorization.

816445727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 816445727 is about 28573.5144320750. The cubic root of 816445727 is about 934.6358603761.

The spelling of 816445727 in words is "eight hundred sixteen million, four hundred forty-five thousand, seven hundred twenty-seven".