816105 has 16 divisors (see below), whose sum is σ = 1338624. Its totient is φ = 424320.

The previous prime is 816103. The next prime is 816113. The reversal of 816105 is 501618.

It is not a de Polignac number, because 816105 - 2¹ = 816103 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49 + ... + 1278.

It is an arithmetic number, because the mean of its divisors is an integer number (83664).

2⁸¹⁶¹⁰⁵ is an apocalyptic number.

It is an amenable number.

816105 is a deficient number, since it is larger than the sum of its proper divisors (522519).

816105 is a wasteful number, since it uses less digits than its factorization.

816105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 816105 is about 903.3852998583. The cubic root of 816105 is about 93.4505825203.

The spelling of 816105 in words is "eight hundred sixteen thousand, one hundred five".