13116805 has 8 divisors (see below), whose sum is σ = 16951032. Its totient is φ = 9686208.

The previous prime is 13116749. The next prime is 13116823. The reversal of 13116805 is 50861131.

It can be written as a sum of positive squares in 4 ways, for example, as 2883204 + 10233601 = 1698^2 + 3199^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13116805 - 2⁹ = 13116293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13116805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100834 + ... + 100963.

It is an arithmetic number, because the mean of its divisors is an integer number (2118879).

Almost surely, 2^13116805 is an apocalyptic number.

It is an amenable number.

13116805 is a deficient number, since it is larger than the sum of its proper divisors (3834227).

13116805 is a wasteful number, since it uses less digits than its factorization.

13116805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201815.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 13116805 is about 3621.7129924940. The cubic root of 13116805 is about 235.8355948235.

Adding to 13116805 its reverse (50861131), we get a palindrome (63977936).

The spelling of 13116805 in words is "thirteen million, one hundred sixteen thousand, eight hundred five".