816069782 has 16 divisors (see below), whose sum is σ = 1355320512. Its totient is φ = 365403720.

The previous prime is 816069733. The next prime is 816069857. The reversal of 816069782 is 287960618.

It is a super-3 number, since 3×816069782³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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, 275348 + ... + 278295.

It is an arithmetic number, because the mean of its divisors is an integer number (84707532).

Almost surely, 2^816069782 is an apocalyptic number.

816069782 is a deficient number, since it is larger than the sum of its proper divisors (539250730).

816069782 is a wasteful number, since it uses less digits than its factorization.

816069782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553723.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 816069782 is about 28566.9351173695. The cubic root of 816069782 is about 934.4923825297.

The spelling of 816069782 in words is "eight hundred sixteen million, sixty-nine thousand, seven hundred eighty-two".