816534767 has 2 divisors, whose sum is σ = 816534768. Its totient is φ = 816534766.

The previous prime is 816534743. The next prime is 816534773. The reversal of 816534767 is 767435618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816534767 - 2⁶ = 816534703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816534737) 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, 408267383 + 408267384.

It is an arithmetic number, because the mean of its divisors is an integer number (408267384).

Almost surely, 2^816534767 is an apocalyptic number.

816534767 is a deficient number, since it is larger than the sum of its proper divisors (1).

816534767 is an equidigital number, since it uses as much as digits as its factorization.

816534767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 47.

The square root of 816534767 is about 28575.0724758486. The cubic root of 816534767 is about 934.6698356705.

The spelling of 816534767 in words is "eight hundred sixteen million, five hundred thirty-four thousand, seven hundred sixty-seven".