816716481 has 16 divisors (see below), whose sum is σ = 1261570944. Its totient is φ = 460301184.

The previous prime is 816716471. The next prime is 816716609. The reversal of 816716481 is 184617618.

It is not a de Polignac number, because 816716481 - 2⁵ = 816716449 is a prime.

It is a super-2 number, since 2×816716481² = 1334051620674046722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (816716471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264846 + ... + 267911.

It is an arithmetic number, because the mean of its divisors is an integer number (78848184).

Almost surely, 2^816716481 is an apocalyptic number.

It is an amenable number.

816716481 is a deficient number, since it is larger than the sum of its proper divisors (444854463).

816716481 is a wasteful number, since it uses less digits than its factorization.

816716481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532840.

The product of its digits is 64512, while the sum is 42.

The square root of 816716481 is about 28578.2518884553. The cubic root of 816716481 is about 934.7391652340.

The spelling of 816716481 in words is "eight hundred sixteen million, seven hundred sixteen thousand, four hundred eighty-one".