816640110 has 192 divisors, whose sum is σ = 2574063360. Its totient is φ = 182632320.

The previous prime is 816640103. The next prime is 816640127. The reversal of 816640110 is 11046618.

816640110 is a `hidden beast` number, since 8 + 1 + 6 + 640 + 1 + 10 = 666.

816640110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 501117 + ... + 502743.

It is an arithmetic number, because the mean of its divisors is an integer number (13406580).

Almost surely, 2^816640110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 816640110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287031680).

816640110 is an abundant number, since it is smaller than the sum of its proper divisors (1757423250).

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

816640110 is a wasteful number, since it uses less digits than its factorization.

816640110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1661 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 816640110 is about 28576.9156838172. The cubic root of 816640110 is about 934.7100285664.

Adding to 816640110 its reverse (11046618), we get a palindrome (827686728).

The spelling of 816640110 in words is "eight hundred sixteen million, six hundred forty thousand, one hundred ten".