11664471 has 16 divisors (see below), whose sum is σ = 19142144. Its totient is φ = 6152544.

The previous prime is 11664437. The next prime is 11664479. The reversal of 11664471 is 17446611.

It is not a de Polignac number, because 11664471 - 2⁶ = 11664407 is a prime.

It is a super-3 number, since 3×11664471³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11664479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21091 + ... + 21636.

It is an arithmetic number, because the mean of its divisors is an integer number (1196384).

Almost surely, 2^11664471 is an apocalyptic number.

11664471 is a deficient number, since it is larger than the sum of its proper divisors (7477673).

11664471 is a wasteful number, since it uses less digits than its factorization.

11664471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42750.

The product of its digits is 4032, while the sum is 30.

The square root of 11664471 is about 3415.3288275070. The cubic root of 11664471 is about 226.7888415265.

The spelling of 11664471 in words is "eleven million, six hundred sixty-four thousand, four hundred seventy-one".