816723105 has 16 divisors (see below), whose sum is σ = 1425553344. Its totient is φ = 395986880.

The previous prime is 816723079. The next prime is 816723109. The reversal of 816723105 is 501327618.

It is not a de Polignac number, because 816723105 - 2⁸ = 816722849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (816723109) 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, 2474754 + ... + 2475083.

It is an arithmetic number, because the mean of its divisors is an integer number (89097084).

Almost surely, 2^816723105 is an apocalyptic number.

It is an amenable number.

816723105 is a deficient number, since it is larger than the sum of its proper divisors (608830239).

816723105 is a wasteful number, since it uses less digits than its factorization.

816723105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949856.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 816723105 is about 28578.3677805434. The cubic root of 816723105 is about 934.7416923026.

The spelling of 816723105 in words is "eight hundred sixteen million, seven hundred twenty-three thousand, one hundred five".