11812705 has 16 divisors (see below), whose sum is σ = 15496704. Its totient is φ = 8605440.

The previous prime is 11812687. The next prime is 11812709. The reversal of 11812705 is 50721811.

It is not a de Polignac number, because 11812705 - 2¹¹ = 11810657 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 11812705.

It is not an unprimeable number, because it can be changed into a prime (11812709) 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, 394 + ... + 4876.

It is an arithmetic number, because the mean of its divisors is an integer number (968544).

Almost surely, 2^11812705 is an apocalyptic number.

It is an amenable number.

11812705 is a deficient number, since it is larger than the sum of its proper divisors (3683999).

11812705 is a wasteful number, since it uses less digits than its factorization.

11812705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 11812705 is about 3436.9615941992. The cubic root of 11812705 is about 227.7454903449.

The spelling of 11812705 in words is "eleven million, eight hundred twelve thousand, seven hundred five".