11966671 has 4 divisors (see below), whose sum is σ = 12130672. Its totient is φ = 11802672.

The previous prime is 11966663. The next prime is 11966681. The reversal of 11966671 is 17666911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11966671 - 2³ = 11966663 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 11966671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11966611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81891 + ... + 82036.

It is an arithmetic number, because the mean of its divisors is an integer number (3032668).

Almost surely, 2^11966671 is an apocalyptic number.

11966671 is a deficient number, since it is larger than the sum of its proper divisors (164001).

11966671 is an equidigital number, since it uses as much as digits as its factorization.

11966671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164000.

The product of its digits is 13608, while the sum is 37.

The square root of 11966671 is about 3459.2876434318. The cubic root of 11966671 is about 228.7306954157.

The spelling of 11966671 in words is "eleven million, nine hundred sixty-six thousand, six hundred seventy-one".