11816785 has 8 divisors (see below), whose sum is σ = 15014376. Its totient is φ = 8897280.

The previous prime is 11816773. The next prime is 11816821. The reversal of 11816785 is 58761811.

11816785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3243601 + 8573184 = 1801^2 + 2928^2 .

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

It is not a de Polignac number, because 11816785 - 2⁷ = 11816657 is a prime.

It is a Duffinian 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, 69426 + ... + 69595.

It is an arithmetic number, because the mean of its divisors is an integer number (1876797).

Almost surely, 2^11816785 is an apocalyptic number.

It is an amenable number.

11816785 is a deficient number, since it is larger than the sum of its proper divisors (3197591).

11816785 is a wasteful number, since it uses less digits than its factorization.

11816785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139043.

The product of its digits is 13440, while the sum is 37.

The square root of 11816785 is about 3437.5550904676. Note that the first 3 decimals coincide. The cubic root of 11816785 is about 227.7717077282.

The spelling of 11816785 in words is "eleven million, eight hundred sixteen thousand, seven hundred eighty-five".