11660555 has 8 divisors (see below), whose sum is σ = 14815872. Its totient is φ = 8779648.

The previous prime is 11660549. The next prime is 11660567. The reversal of 11660555 is 55506611.

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 11660555 - 2⁶ = 11660491 is a prime.

It is a Duffinian 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, 68507 + ... + 68676.

It is an arithmetic number, because the mean of its divisors is an integer number (1851984).

Almost surely, 2^11660555 is an apocalyptic number.

11660555 is a deficient number, since it is larger than the sum of its proper divisors (3155317).

11660555 is a wasteful number, since it uses less digits than its factorization.

11660555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137205.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 11660555 is about 3414.7554817293. The cubic root of 11660555 is about 226.7634594780.

The spelling of 11660555 in words is "eleven million, six hundred sixty thousand, five hundred fifty-five".