816734562 has 16 divisors (see below), whose sum is σ = 1866821952. Its totient is φ = 233352720.

The previous prime is 816734549. The next prime is 816734573. The reversal of 816734562 is 265437618.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 19446061 = 816734562 / (8 + 1 + 6 + 7 + 3 + 4 + 5 + 6 + 2).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9722989 + ... + 9723072.

It is an arithmetic number, because the mean of its divisors is an integer number (116676372).

Almost surely, 2^816734562 is an apocalyptic number.

816734562 is an abundant number, since it is smaller than the sum of its proper divisors (1050087390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816734562 is a wasteful number, since it uses less digits than its factorization.

816734562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19446073.

The product of its digits is 241920, while the sum is 42.

The square root of 816734562 is about 28578.5682286569. The cubic root of 816734562 is about 934.7460631374.

The spelling of 816734562 in words is "eight hundred sixteen million, seven hundred thirty-four thousand, five hundred sixty-two".