11766005 has 8 divisors (see below), whose sum is σ = 14249400. Its totient is φ = 9326016.

The previous prime is 11765987. The next prime is 11766031. The reversal of 11766005 is 50066711.

It can be written as a sum of positive squares in 4 ways, for example, as 1868689 + 9897316 = 1367^2 + 3146^2 .

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 11766005 - 2²² = 7571701 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10250 + ... + 11339.

It is an arithmetic number, because the mean of its divisors is an integer number (1781175).

Almost surely, 2^11766005 is an apocalyptic number.

It is an amenable number.

11766005 is a deficient number, since it is larger than the sum of its proper divisors (2483395).

11766005 is a wasteful number, since it uses less digits than its factorization.

11766005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21703.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 11766005 is about 3430.1610749351. The cubic root of 11766005 is about 227.4449732067. Note that the first 3 decimals are identical.

The spelling of 11766005 in words is "eleven million, seven hundred sixty-six thousand, five".