11405667 has 32 divisors (see below), whose sum is σ = 19192320. Its totient is φ = 5863680.

The previous prime is 11405663. The next prime is 11405699. The reversal of 11405667 is 76650411.

It is not a de Polignac number, because 11405667 - 2² = 11405663 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11405663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10684 + ... + 11702.

It is an arithmetic number, because the mean of its divisors is an integer number (599760).

Almost surely, 2^11405667 is an apocalyptic number.

11405667 is a deficient number, since it is larger than the sum of its proper divisors (7786653).

11405667 is a wasteful number, since it uses less digits than its factorization.

11405667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 11405667 is about 3377.2277092313. The cubic root of 11405667 is about 225.0989984103.

The spelling of 11405667 in words is "eleven million, four hundred five thousand, six hundred sixty-seven".