816716493 has 32 divisors (see below), whose sum is σ = 1223164800. Its totient is φ = 538570368.

The previous prime is 816716471. The next prime is 816716609. The reversal of 816716493 is 394617618.

It is a happy number.

816716493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 816716493 - 2⁸ = 816716237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816716423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1238998 + ... + 1239656.

It is an arithmetic number, because the mean of its divisors is an integer number (38223900).

Almost surely, 2^816716493 is an apocalyptic number.

It is an amenable number.

816716493 is a deficient number, since it is larger than the sum of its proper divisors (406448307).

816716493 is a wasteful number, since it uses less digits than its factorization.

816716493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1092 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 816716493 is about 28578.2520984052. The cubic root of 816716493 is about 934.7391698121.

The spelling of 816716493 in words is "eight hundred sixteen million, seven hundred sixteen thousand, four hundred ninety-three".