10816809 has 8 divisors (see below), whose sum is σ = 14596512. Its totient is φ = 7124160.

The previous prime is 10816787. The next prime is 10816847. The reversal of 10816809 is 90861801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10816809 - 2⁹ = 10816297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10816809.

It is not an unprimeable number, because it can be changed into a prime (10816849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21472 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (1824564).

Almost surely, 2^10816809 is an apocalyptic number.

It is an amenable number.

10816809 is a deficient number, since it is larger than the sum of its proper divisors (3779703).

10816809 is an equidigital number, since it uses as much as digits as its factorization.

10816809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43527.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 10816809 is about 3288.8917586324. The cubic root of 10816809 is about 221.1565061903.

The spelling of 10816809 in words is "ten million, eight hundred sixteen thousand, eight hundred nine".