816716471 has 2 divisors, whose sum is σ = 816716472. Its totient is φ = 816716470.

The previous prime is 816716449. The next prime is 816716609. The reversal of 816716471 is 174617618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816716471 - 2²² = 812522167 is a prime.

It is a super-3 number, since 3×816716471³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816716671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408358235 + 408358236.

It is an arithmetic number, because the mean of its divisors is an integer number (408358236).

Almost surely, 2^816716471 is an apocalyptic number.

816716471 is a deficient number, since it is larger than the sum of its proper divisors (1).

816716471 is an equidigital number, since it uses as much as digits as its factorization.

816716471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 816716471 is about 28578.2517134971. The cubic root of 816716471 is about 934.7391614190.

The spelling of 816716471 in words is "eight hundred sixteen million, seven hundred sixteen thousand, four hundred seventy-one".